Description Waist --- S:10-15(30-40cm) small dogs M:15-18(40-50cm) small dogs L:18-22(50-60cm) medium dog XL:22-26(60-70cm) medium and large dog. Generally suggest buyers buy one/two size bigger than usual to ensure your dog have better comfortable experience and when he/she grows. they still can wear Mutilfunctional --- Daily use dog panty(you can put a sanitary pad/paper urine mat into it. our pants not included diaper pad). It can protect the female dogs effectively during menstruation. Eliminate embarrassment and annoyance. avoid pet receive sexual harassment. Let your dog comfortably through the menstrual period Reusable --- The washable underpants are made of natural cotton. its very soft. comfy. breathable and durable. These washable diapers are more economical and environmentally friendly than disposable diapers Perfect Dog Pants --- Useful for untrained puppies. females in heat. and dogs that suffer from excitement urination or incontinence. Best solution to your puppy with training problem for prolonged period of use Adjustable --- 5 cm wide HOOK LOOP design. Soft and comfortable to increase acceptance. quick and easy to Put On/Off. and wont stick to fur. Design with a tail hole. convenient for dog to expose her tail and wag tail freely