Compatible Sizes: S Size: Diameter 15.7 inches (40 cm), Height 4.3 inches (11 cm), Weight 10.6 oz (304 g), For pets less than 8.8 lbs (4Size M: Diameter 19.7 inches (50 cm), Height 5.1 inches (13 cm), Weight 19.4 oz (544 g), For pets less than 17.6Size L: Diameter 23.6 inches (60 cm), Height 5.1 inches (13 cm), Weight 28.2 oz (814 g), For pets less than 33.1 lbs (