Sizing Guide

SIZE
DIAMETER
 WEIGHT
XS
40cm
2KG
S
50cm
4KG
M
60cm
7.5KG
L
70cm
15KG
XL
80cm
18KG
2XL
90cm
20KG
3XL
100cm
45KG+

 Measurement is outter diamater as per picture

The weight is an estimate and a guideline, try to get a measurement of your pet sleeping while curled up to get a better understanding of the sizing that's appropriate.
Cats are usually a small to a medium, don't be afraid to get a slightly larger one for extra stretch out room!