October 9, 2026 · 4 min read
One chart, four sizes, and about two minutes of measuring — that is everything standing between your pet and a collar that fits like it was made for them (because it was). Here is how our sizes actually map.
Every band is adjustable, so each size covers its full range — and there is room left for winter coat and summer trim. If you want the full walkthrough, the size guide and our measuring tutorial go deeper.
Measure around the middle of the neck, where the collar naturally rests, then add two fingers of room under the tape. Snug, never tight. If your pet holds still for exactly one second, that second is enough.
Because the band adjusts, there is no comfortable reason to squeeze into the smaller size — size up and tighten it to fit. The one exception: a pet at the very top of a range who pulls hard might prefer the snugger option. When in doubt, go up.
Most adult cats land right in the middle of M, while kittens start in S. Our smallest sizes were designed for light wear on small necks, and the same piece that suits a cat often fits a toy breed too — see the cat collar guide for feline-specific rules like breakaway safety.
Send us your pet's neck measurement and breed, and we will confirm the right size before you order — two lines, one answer.
Measure twice. Fall in love once.