Tip: To avoid size problems, measure the weight of the dog, neck circumference, chest circumference and back length and choose the appropriate size according to the size table. Relationship between size and weight of the pet: xs-0.5 kg: s 0.5-1 kg: m 1-1.5 kg: l1.5-2.5kg: xl 2.5-4.5 kg: xxl 4.5-6.5 material Main: 100% new and high quality, 65% cotton, 35% polyester, soft cotton material and high quality comfortable to keep your crowded puppy.