Crewsaver's Petfloat is suitable for cats and dogs, and comes in four sizes to fit most breeds.
Made from soft closed-cell foam, the Petfloat has a built in lifting handle and retro-reflective tape. It is adjustable and quick to fit.
The 4 sizes (taking measurements from the collar to the base of the tail) are:
S 8" - 12" (20cm - 30cm)
M 12" - 18" (30cm - 45cm)
L 18" - 22" (45cm - 56cm)
XL 22" - 26" (56cm - 66cm)