This dog hat is best fit by weight of the dog, though we also provide actual dimensions of the hat (l x w). Keep in mind that the hat is exceptionally stretchy and will accommodate dogs within a wide range of sizes.
Minimum to Maximum Weight
Small 8 lbs -18 lbs 7.5″ x 4.5″
Medium 18 lbs -50 lbs 9.5″ x 5.5″
Large 50 lbs – 110 lbs 11″ x 7″