Sizing Guide
Sizing is our competitive moat. Here's exactly how to measure your pet so you order with confidence, not a prayer.
How to measure
Measurement 1
From the base of the neck (where the collar sits) to the base of the tail. Keep the tape flat along the spine. Don't stretch it—let your pet's natural posture set the length.
Measurement 2
Around the widest part of the chest, just behind the front legs. This is the most important measurement. If your pet is between sizes, the chest girth breaks the tie—go up.
Measurement 3
Around the neck where the collar normally sits. Leave two fingers of space between the tape and your pet's neck. Too tight here = they shake it off in 30 seconds.
Pro Tip
Pets don't hold still. Get a helper to keep them calm, measure at least twice, and use the larger number when in doubt. It's easier to take in a slightly large fit than return too-tight clothing.
For Cats
Cats have a loose belly flap (the primordial pouch). Measure their chest right after eating when they're relaxed and their belly is slightly full—this gives the most accurate girth reading.
What you'll need
Any fabric measuring tape works. No special tools. Don't use a metal ruler—it's harder to get around curves and your pet will hate you for it.
Size charts
| Size | Back Length | Chest Girth | Neck Girth | Weight Range | Common Breeds |
|---|---|---|---|---|---|
| XS | 7–9 in | 10–12 in | 6–8 in | 2–5 lbs | |
| S | 10–13 in | 13–16 in | 8–10 in | 5–12 lbs | |
| M | 13–17 in | 16–20 in | 10–13 in | 12–22 lbs | |
| L | 17–21 in | 21–26 in | 13–17 in | 22–40 lbs | |
| XL | 21–26 in | 26–32 in | 17–22 in | 40–65 lbs |
* Weight is a guide only. Always go by measurements. A barrel-chested Bulldog and a slim Greyhound can weigh the same and need completely different sizes.
| Size | Back Length | Chest Girth | Neck Girth | Weight Range | Common Breeds |
|---|---|---|---|---|---|
| XS | 8–10 in | 9–11 in | 6–7.5 in | 3–6 lbs | |
| S | 10–13 in | 11–13 in | 7.5–9 in | 6–9 lbs | |
| M | 13–16 in | 13–15 in | 9–11 in | 9–12 lbs | |
| L | 16–19 in | 15–18 in | 11–13 in | 12–15 lbs | |
| XL | 19–23 in | 18–22 in | 13–16 in | 15–20 lbs |
* Cat sizing prioritizes chest girth above all else. Cats have a wider range of body shapes than weight suggests—especially barrel-chested breeds like Ragdolls and Maine Coons.
Fit tips
You should be able to slide two fingers between the neck opening and your pet's neck. Any tighter and they'll spend the next hour trying to remove it.
For outfits with leg holes, make sure they don't restrict movement or dig in when your pet sits. Have them sit, stand, and take a few steps before calling it good.
A back length that's slightly short is better than one that drags. Too long and it restricts the hindquarters and makes your pet walk funny (and annoyed).
Sphynx cats have a longer torso proportionally but a narrower chest than their weight suggests. Measure both dimensions and go by chest girth first.
French Bulldogs, English Bulldogs, and Pugs have thicker necks relative to their body. If their chest fits M but neck is tight, go L and the chest will still have room.
If you're buying a sweater to layer over a shirt, measure with the underlayer already on. Add 1–2 inches to chest girth to account for the extra fabric.
When measurements land right at a size boundary, these rules decide which way to go.
If chest says L but back says M, go L. Chest restriction is the #1 reason pets shake off clothes.
Slightly short is fine. Dragging on the floor is not. For back length ties, choose the smaller size.
Email us your pet's three measurements and we'll tell you exactly what to order. No hassle.
You've got the measurements. Now go find something your pet will actually keep on.
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