Size Chart

Measure your cat's weight and back length (from the base of the neck to the base of the tail). Between two sizes? Go for the bigger one.

Size	Cat weight	Back length
S	1–4 lb (0.5–2 kg)	10.2 in (26 cm)
M	4–6.5 lb (2–3 kg)	10.2–11 in (26–28 cm)
L	6.5–9 lb (3–4 kg)	11–12.2 in (28–31 cm)
XL	9–11 lb (4–5 kg)	12.2–13.8 in (31–35 cm)
XXL	11–15.5 lb (5–7 kg)	13.8–15.7 in (35–40 cm)
XXXL	15.5–22 lb (7–10 kg)	15.7–19.7 in (40–50 cm)

Measurements are taken by hand and may vary by about 0.8 in (2 cm).