If you’ve shopped for a raincoat for a big dog, you probably know how it goes.
The pet store’s biggest size was an XL, and the XL wouldn’t close around his chest. The online listing ran from XS to 7XL, so you ordered two sizes to be safe — one stopped halfway down his back, the other hung off him like a bedsheet. Back they went. The one that finally fit was a slicker that sat across his back like a tarp, and he still came home with a soaked chest, a muddy belly and four wet legs. So you did the towel routine in the hallway anyway. Then the floor. Then the car seat.
Our customers tell us the same story, in almost the same words:
“I tried 3 other fits that claimed from their sizing chart it would fit & had to return all 3.” — owner of a 135lb Mastador
“I’ve been looking for a raincoat for over a year.” — owner of a 65lb Goldendoodle
“Most just cover the top of the dog but that does nothing against all of the puddles and mud.”
“My Yorky has all the options in the world and my Portuguese Water Dog has had very few.”
None of that is bad luck. Most dog raincoats are drawn around a small dog standing still in light rain, then scaled up. This is our complete guide to telling which ones weren’t — fit, waterproofing, coverage, comfort, drying and the details that decide whether a coat gets used — checkable on any brand’s product page, including ours. It’s written for the dogs the size charts stop before: roughly a back length of 24 inches and up.
The short version
- Fit first. Sizes in inches of back length, a chart that asks for the chest too, and adjustment at the neck, waist and tail.
- A number, not a word. A millimetre waterproof rating — 10,000mm or more for real rain.
- Full body. A belly panel and four leg sleeves, or the mud ends up on your floor.
- Soft, light and breathable. Not rubber, not a tarp.
- Built to be used again tomorrow. Dries fast, zips instead of Velcro, and has reflective trim.
First: does your dog actually need a raincoat?
Before any of the buying advice, the honest question. Plenty of dogs don’t need one. And plenty of the dogs that do are the ones their owners assume are already covered.
- Thick double coats. Golden retrievers, Bernese, Newfoundlands, Great Pyrenees, German and Australian shepherds, huskies and malamutes. The outer coat sheds a light shower. A long walk in steady rain soaks through to the undercoat, and the undercoat holds it like a sponge — it stops insulating, it starts to smell, and it’s still damp at bedtime. “If you have a double coated breed, you know how difficult drying them off can be,” as one golden owner put it.
- Curly and feathered coats. Doodles, poodles, Portuguese water dogs, setters, collies. Curls and feathering trap water, mud and grass seed, and a wet curly coat mats. “Those with doodles need this for rain walks — makes the dry off when home easy breezy.”
- Older dogs and puppies. Both regulate temperature less well, and being wet matters more than the thermometer does — a soaked dog at 40°F is in more trouble than a dry dog at 25°F. Wet and cold is also hard on stiff, older joints.
- Dogs that are healing. If your vet has asked you to keep stitches, a surgical site or a skin problem dry, a raincoat is often the simplest way to get through a wet week without skipping walks. Follow your vet’s advice on what’s safe to cover.
- Dogs that refuse to go out in the rain. Some dogs will hold it rather than get wet. One of our customers had a rescue who was “very opposed to going out in the rain” — with a coat on, he walked, and ended up chasing squirrels.
- The freshly groomed dog. You just paid for a clean, blown-out, brushed dog. Ten minutes in the rain undoes it.
- Service and therapy dogs. They don’t get to skip the weather, and after the walk they walk into hospitals, classrooms, stores and other people’s homes. Arriving soaked and muddy isn’t an option.
- Where you live. If it rains most weeks from autumn to spring — the Pacific Northwest, New England, the UK, monsoon country — you’re doing the towel routine over and over, all season. Warm, heavy storms in the South bring the same mess without the cold.
- How you live. A dog that rides in your car, sleeps on the sofa or walks through city puddles full of road grime brings all of it inside with them.
And who probably doesn’t: a short-coated dog on a ten-minute potty walk in light rain. Towel, done. The case for a raincoat gets stronger the longer the walk, the heavier the rain, the thicker the coat and the cleaner you need the dog to be afterwards. Which big dogs need a winter coat has a thirty-second coat test that tells you which kind of dog you have.
1. Fit — the problem that comes before everything else
Ask big-dog owners what went wrong with their last raincoat and most of them won’t mention water at all. They’ll tell you it didn’t fit.
- The biggest size is still too small. Store brands tend to stop at XL or XXL, and the XXL is sized for a 60-pound dog with a narrow chest.
- The sizes mean nothing. One listing’s XL is another listing’s M. Online, the same coat can run from XS to 7XL, with a chart that asks for one measurement and a bolded note to size up.
- The chest won’t close. Deep-chested dogs — Dobermans, Danes, shepherds, bully breeds — max out the chest while the back length still has inches to spare. “We have tried several different suits that were too tight in the chest,” one bully owner told us.
- It closes and it’s the wrong shape. Too short in the back, too baggy at the waist, sleeves ending at the elbow, the belly panel stopping mid-ribcage.
Before you look at anything else on a product page, measure your dog — back length from the base of the neck to the base of the tail, and chest girth just behind the front legs. Our size guide shows where to put the tape. Then you can check a chart instead of trusting a letter.
- 1Back length: base of the neck to the base of the tail. This is the size number
- 2Chest: all the way round, just behind the front legs. On a thick coat, run the tape through the fur, close to the skin but not tight
A big dog isn’t a small dog enlarged. The chest is deeper, the waist is slimmer, the shoulder travels further with every stride, and leg length varies wildly at the same back length — a 26-inch shepherd and a 26-inch standard poodle are two different animals below the body. The winter coat guide goes through exactly why a scaled pattern fails. A full-body raincoat is where it shows up fastest, because there are four leg sleeves that have to land on four legs.
No adjustment means no fit
Even a pattern drawn for big dogs can’t fit every big dog. They come in every shape: barrel-chested, tucked-up, long in the back, tall in the leg, no tail at all. A raincoat with no way to adjust it fits one shape and tolerates the rest — and in rain, “tolerates” means gaps, and gaps let water in. A full-body raincoat with nothing to adjust is a failed design. Look for adjustment at the neck, the waist and the back end, at the very least.
Does the size chart ask for back length and chest? One number isn’t enough. Are the sizes in inches, or letters? Letters are a guess. Does the range run from a chihuahua to a mastiff? Then it was drawn once and scaled. Where does it adjust? If the answer is nowhere, move on.
Where we sit: the Puddle Jumper was drafted for big dogs from the start — it’s the coat this company started with, the one we couldn’t buy for our own golden retriever. The sizes are the back length in inches: 24, 26, 28 and 30, and a 30 still has room for a back of 32 or 33 inches. The chest is cut generous for deep-chested dogs, and the Full-Stride Cut runs the seam around the shoulder blade instead of across it, so the stride doesn’t shorten. It adjusts at the neck, the waist and the tail, and the legs can be rolled up on a shorter-legged dog. One owner summed it up: “It fits better and has more adjustment points than other full coverage suits I’ve seen.”
- 1Neck: cinches, and the collar pulls up
- 2Waist: drawcord keeps the coat in place
- 3Tail: adjusts at the back end
- 4Legs: roll up for a shorter-legged dog
Buy to the larger of back length and chest, and if your dog is lean, short-coated or between sizes, go down rather than up — most people order one size too big. Not sure? Ask us before you order, and if it still isn’t right, exchanges are free.
2. What “waterproof” actually means
This is the one job a raincoat has, and it’s where dog-product listings are loosest with the truth. “Waterproof,” “water-resistant” and “water-repellent” get used as if they mean the same thing. They describe three different ways of treating fabric, and they behave very differently in a real downpour.
| What the label says | How it works | What happens in real rain |
|---|---|---|
| Water-repellent | A chemical finish (often called DWR) on the surface of an ordinary fabric. Water beads and rolls off | Fine in a short shower. In steady rain the surface wets out and water soaks through. The finish also wears off with washing and rubbing — this is what a lot of “waterproof” dog coats actually are |
| Water-resistant | A tightly woven fabric, sometimes with a light coating | Slows water down. Holds up to a drizzle, not to a walk in heavy rain |
| Waterproof | A continuous barrier — a coating or a membrane — bonded to the fabric, so there’s no path for water to get through | Holds in sustained rain. Measured with a number, in millimetres |
The number is the whole point. Fabric is tested by putting a column of water on top of it and raising it until water pushes through. The height of that column, in millimetres, is the rating — the higher it goes, the more pressure the fabric can take. British and European standards treat roughly 1,500mm as the minimum to call a fabric waterproof at all.
Pressure matters more on a dog than you’d think. A dog lies down on wet grass, a harness presses the fabric against its back, and a shake throws water against the seams — all of that pushes water harder than rain falling on a hanger. That’s why the independent testers at Treeline Review found what they did: in their 2026 raincoat test, published ratings ran from 2,000mm to 20,000mm, several coats published no number at all, and one that did well when new was letting water through at the legs months later.
Where we sit: the Puddle Jumper is rated 16,000–20,000mm. The fabric is what outdoor brands call a three-in-one: a 50D polyester shell, a PVC-free PU waterproof coating bonded to the inside, and a non-PFC water-repellent finish on the outside. Think of it as two lines of defence. The outer finish makes rain bead and roll off, so the fabric doesn’t soak up weight. The coating underneath is the part that actually stops water — and because it’s bonded into the fabric rather than sprayed on top, it doesn’t wash off. PVC-free means no stiff, plasticky poncho material. Non-PFC means the repellent finish is made without the “forever chemicals” the outdoor industry is moving away from.
3. Coverage — why back-only coats leave you with a wet dog
Rain doesn’t only fall on a dog from above. It splashes up off the pavement and out of every puddle, it soaks in from wet grass, and a moving dog throws it at its own chest and legs. Most dog raincoats come in one of two shapes, and they solve very different problems.
| Shape | What it does well | The catch |
|---|---|---|
| Back-only (cape, vest, poncho) |
Quick to put on. Keeps the spine dry in a shower | Chest, belly and legs stay bare. Held on by a strap or two, so it rotates round the body on the move and flips open in the wind — within ten minutes of a trot it’s sitting on the dog’s side |
| Full body (belly panel, four leg sleeves) |
Covers everything except the paws, head and tail. Can’t rotate, can’t blow open | Takes longer to put on, and needs a little practice at first |
The parts a back-only coat leaves out are exactly the parts that matter:
- The belly and chest are closest to the ground, get the most splash, and on most dogs carry the longest, thickest fur. They’re the first to get soaked and the last to dry.
- The legs go through every puddle. On a feathered or curly dog — goldens, setters, Bernese, doodles, Aussies, Pyrenees — leg fur holds water and mud for hours.
- City water is dirty water. Puddles on a street carry road grime and oil, and that’s what ends up in the fur and then on your floor. “Normally takes 10 minutes to get debris from the road off his fur,” one customer wrote after a walk down a muddy road in ours. “No clean up except to dry his paws.”
- In snow, long leg and belly fur collects snowballs that melt on your floor. “…even helped with the recent snow fall so she didn’t have melted flakes/ice in her fur,” as one Great Danoodle owner put it.
What you’re really buying with coverage isn’t a dry dog in the abstract. It’s the ten minutes after the walk: no towelling the belly in the hallway, no four muddy legs across the kitchen, no wet-dog smell in the car. Rain stops being a production.
Full body done right. Four leg sleeves are where full-body raincoats most often go wrong. In the same independent test, one suit’s legs rode up into “capris” on the run, two coats had knitted cuffs that soaked up water, and one had dogs backing out of the rear legs. A good leg sleeve stops just above the paw, holds with gentle elastic at the ankle rather than squeezing the whole leg, and leaves the paw free.
The honest trade-off: a full-body raincoat takes longer to put on than a cape — head through, front legs, back legs, zip. The first few times it’s fiddly, and a claw can catch in the cuff elastic. One of our customers has the method down: “I reach through from the outside of sleeve to get foot in covering the paw with my hand to prevent claws getting stuck in elastic.” After a week it takes a minute. Our step-by-step dressing guide shows the whole sequence. A minute to put on, against fifteen minutes with a towel, is a trade most owners take.
Where we sit: the Puddle Jumper is full body — back, chest, a panel under the belly and all four legs, ending just above the paw. “Covers right above the paws without overly tight elastics,” as one owner put it.
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- 1Extended collar: pull it up and cinch it. No hood
- 2Reflective piping along the shoulder seam
- 3Waist drawcord: where the belly panel ends
- 4Front leg sleeve, cuffed just above the paw
- 5Rear leg sleeve, same cuff
Look at a side-on shot and a front-on shot. Is there a panel under the chest and belly, or two straps with a gap between them? Do the legs have sleeves, or does the coat stop at the body? Follow the hem backwards — does it reach past the hips? And look at the cuffs: elastic that gathers above the paw, or a tight knit that wicks?
4. Comfort — would you wear it?
Scroll the raincoats on Amazon or Chewy, or walk the aisle at a big pet store, and a lot of what’s sold for dogs is thick, rubbery vinyl or stiff tarp-like fabric. Picture wearing that yourself for an hour: stiff at every joint, rustling with every step, clammy inside. That’s what many dogs are being asked to walk in — and many of them tell you in the only way they can. They freeze on the spot, walk like robots, or rub at the coat until it comes off.
Three things decide whether a raincoat is comfortable, in this order.
Soft. The fabric should move with the dog and feel like clothing, not packaging. If it crinkles in the product video, it will crinkle next to your dog’s ears for the whole walk.
Thin and light. A raincoat doesn’t need thickness to be waterproof — the barrier is a coating a fraction of a millimetre thick. Bulk only adds weight, restricts the shoulder and legs, and gives the fabric more to rub.
Breathable — and this is the counterintuitive one.
That’s why good rain gear is breathable. It works because rain and sweat arrive in different forms: rain is liquid water, in drops; what comes off a warm body is water vapour, as individual molecules. A breathable waterproof layer is built to stop the first and let the second work its way out. Almost nobody in dog gear publishes a breathability figure — in that independent test, exactly one of the raincoats published one, and it was the one that stayed driest inside while others got sticky with condensation. We don’t publish one either. What you can check is whether the page mentions breathability at all, and whether the coat is a light shell or a lined, padded jacket.
- 1Non-PFC water-repellent finish: rain beads and rolls off
- 250D polyester shell: light, soft, no lining
- 3PVC-free PU coating: stops liquid water, lets vapour out
Where we sit: the Puddle Jumper is built from the same kind of fabric as a good human rain shell, because we don’t see why your dog’s raincoat should be made of anything worse than yours. The three-in-one fabric means the waterproof coating, the shell and the repellent finish are one layer — nothing padded, nothing stacked. It’s a 50D shell, the yarn weight you’d find in a lightweight hiking rain jacket. It weighs about 210 to 280 grams depending on size — less than a can of soda. The coating is breathable, so the heat and moisture a working dog makes can get out. And it’s still rated 16,000–20,000mm. “I wanted a rain coat that wouldn’t be too hot,” one Irish setter owner told us. “Allows my dog perfect mobility,” wrote another.
No raincoat makes a dog impossible to overheat. On a warm, humid day with a lot of running, a thick-coated dog can still get hot — watch for hard panting or slowing down, and take it off. When the day is cold and wet, that’s a different job: the Snow Warrior puts a fleece lining inside the same waterproof rating.
5. Drying — the second-day problem
A raincoat comes home wet. That’s its job. The question is whether it’s dry by the next walk — and in a wet climate, the next walk is tomorrow morning.
This is where a lot of dog raincoats quietly fail. The independent test flagged a thick coat that took a while to dry, and a stiff one that was hand-wash only. Lined coats hold water in the lining long after the outside has shed it. Vinyl and rubbery coats stay clammy on the inside. Hang one on a hook and it’s still damp in the folds the next day, and starting to smell.
Where we sit: after a wet walk the Puddle Jumper doesn’t need the washing machine — you might need it again tonight. Rinse the mud off under the shower head, hang it open, and it’s ready for the next walk. With no lining to hold water and a surface that sheds it, there’s very little in it to dry. It can go through a cold, gentle machine cycle when it needs a proper clean, but for everyday mud a rinse is quicker and easier on the coating. It should never go in the dryer: heat is what damages waterproof coatings fastest.
6. The details that make it gear, not a costume
Small things, and every one of them is visible on a product page if you look.
A zip, not Velcro. Velcro works perfectly in the shop. Then the hook side fills with fur, grit and grass seed, stops gripping, and pulls hair every time you open it — on an animal made of exactly what Velcro collects, it’s the wrong fastener. Belly straps leave gaps exactly where the water comes from. A zip behaves the same on the hundredth walk as on the first. The Puddle Jumper zips along the back, neck to tail, with a waterproof zip. One owner noticed the “waterproof zipper seams that provided protection like ones used in highend rain gear for human outdoor activities.”
A leash portal that matches how you walk. “Leash opening” can mean a collar portal at the neck, a slot in the back for a harness, or nothing at all. Ours is a collar portal at the back of the neck: clip straight to a collar underneath — some harnesses clip through it too, if their leash ring sits at the back of the neck. Otherwise the harness goes over the coat. On a thin shell that’s a strength, not a compromise: the fabric adds almost no bulk, so a harness on top sits exactly where it would on the bare dog and stays put — and there’s no hole cut in the top of the back, which is where the rain lands hardest.
A potty opening. Any full-body raincoat should have one, so you’re not undressing a dog on the sidewalk. It’s standard on a well-made coat — just check it’s there. Ours has one, and the adjustable waist keeps the coat from sliding back over it.
7. Being seen
This one is about safety, and it gets overlooked. Rainy walks are dark walks: heavy cloud at four in the afternoon, early mornings in winter, wet roads, wipers going, headlights glaring off the tarmac. A driver sees a dark dog much later than you’d hope, and a wet dark dog later still.
Reflective detail on a raincoat isn’t decoration. It costs a manufacturer almost nothing to add, which makes its absence telling. A raincoat with nothing reflective on it was designed without thinking about when rainy walks actually happen. The Puddle Jumper has reflective trims — along the Full-Stride seam, where headlights pick up the shape of the dog as it moves.
8. Do you need a hood?
Surprisingly, no — and a hood is often what makes a dog hate its raincoat.
Dogs read the world through their eyes and ears, and a hood gets in the way of both. Head shapes vary so much between breeds that a hood cut for a retriever hangs wrong on a shepherd and swallows a bully breed. In the independent test, one raincoat’s hood wouldn’t stay up, fell into the dog’s eyes and put the dog off the coat altogether. A wet head, meanwhile, is usually fine: dogs shake, heads dry fast, and the water that causes trouble is the water sitting in the fur over the ribs and belly.
Where we sit: we don’t make a hood, because we think it fails by design. The Puddle Jumper’s collar extends instead — pull it up the neck and cinch it, and it covers as much of the neck and head as it can without anything falling over the eyes or ears. It won’t cover the whole head. Nothing that stays out of a dog’s eyes can, and we’d rather say so.
9. Keeping it waterproof
Here’s why the raincoat that worked in October leaks by March. Many cheap dog raincoats are ordinary fabric with a water-repellent finish and nothing underneath, and that finish rubs and washes off. Vinyl stiffens in the cold and cracks at the folds. Thin coatings peel. Once the barrier is gone, it’s a jacket.
A proper waterproof raincoat lasts for years with a little care:
- Rinse more, wash less. Mud and road grime wear the surface finish down, so rinse it off after a dirty walk. Save the washing machine — cold, gentle, zip closed, mild detergent — for the occasional proper clean.
- Dry it open, then store it. Hang it until it’s fully dry before folding it away. Stored damp, any raincoat will smell.
- No fabric softener, no bleach, no dryer, no iron. Softener clogs the finish, bleach attacks the coating, and heat damages it.
- When water stops beading, re-proof it. After a season of walks, you may notice the outside darkening in the rain instead of beading. That’s the outer finish wearing thin, not the waterproof coating failing. A spray-on DWR re-proofer from any outdoor store brings the beading back — spray the clean, damp coat and let it dry.
And the other end of the leash
You’re out in the same rain. If your dog’s raincoat is built like proper outdoor gear, yours should be too. The human Puddle Jumper is made from the same waterproof fabric, in the same three colours, so the two of you can go out anyway — and match while you’re at it.
The five-minute check
Take this to any brand’s page
- Does the size chart ask for back length and chest — in inches, not just letters?
- Was it drawn for big dogs, or does one pattern run from a chihuahua to a mastiff?
- Where does it adjust — neck, waist, back end?
- Is there a millimetre rating, or just the word “waterproof”?
- Is there a panel under the chest and belly, or straps and a gap?
- Do the legs have sleeves that stop just above the paw?
- Is it a soft, light shell — and does the page mention breathability at all?
- Zip, or Velcro and straps?
- Where does the leash clip on, and will your harness sit over it?
- Any reflective detail?
Nothing on that list requires trusting a brand, including this one. Every item is something you can see on the page in front of you.
If you already know what you’re looking for, our rain gear is one coat for the dog and a matching one for you. And if you’re still not sure your dog needs anything, the breed guide takes thirty seconds and costs nothing.