Fit Guide · Vol. 1

The Size Chart.

Measure twice, order once. Every garment is patterned from real chonk proportions — chest, neck, and back length all matter more than weight alone.

Measure Methods
  1. To better fit your cat, please measure their chest, neck, and back length first and compare to the chart below.
  2. If your cat's measurement sits close to a size boundary (within roughly 1cm / 0.4"), size up to ensure maximum comfort and range of motion.
neckchest girthback length
Where to measure
  • Neck girth — around the base of the neck, where a collar sits.
  • Chest girth — the widest point around the ribcage, just behind the front legs.
  • Back length — from the base of the neck to the base of the tail.
Garment measurements by size
SizeM
10–13 lb
L
13–16 lb
XL
16–20 lb
XXL
20+ lb
Chest Girth35cm/13.77"39cm/15.35"43cm/16.92"47cm/18.50"
Neck Girth25cm/9.84"28cm/11.02"31cm/12.20"34cm/13.38"
Back Length28cm/11.02"32cm/12.59"36cm/14.17"40cm/15.74"

All measurements approximate. Between sizes? Size up — every garment is stretch-panelled at the seams.

A cautionary tale: Koda, the FatCatCatalog mascot, wedged into a striped sweater several sizes too small, buttons popping off, discarded size Small tags scattered around him and a properly fitting Large jacket on the floor beside him.

Back when we still cut a Small, Koda ordered one. He is, by every honest measurement, a Large — the jacket on the floor beside him fits perfectly. The sweater made it over one ear. Buttons were lost. Dignity was, briefly, also lost. We start at M now, and the lesson is the reason why: measure first, guess never.

Find their size →