Our dog diapers are designed for male or female dogs that are incontinent, or for pets that experience excitable urination. They are also great for housebreaking puppies, or for female dogs in heat. THEY EVEN WORK FOR CATS!!Each dog diaper is made of durable, soft, Cotton Denim (similar to the material that blue jeans are made of). They are lined with a soft plaid flannel fabric for added comfort and an absorbent mesh liner that can hold an absorbent liner for protection against a heavier flow of liquid or waste. The dog diapers are machine washable. For pets that have a heavier flow, we recommend using absorbent liners which can be used in conjunction with our garments for added absorbency. For light seasonal flow or minor excitable urination the garments may be used alone, or in conjunction with the absorbent liners.SIZING: In order to size your dog properly measure their waist. To fit the anatomy of your male dog size up one size. X-Small - 10" to 13" (3 to 10 lbs) Small - 15" to 20" (10 to 20 lbs) Medium - 17" to 24" (20 to 35 lbs) Large - 20" to 26" (35 to 50 lbs) X-Large - 22" to 31" (50 to 90+ lbs)WASHING INSTRUCTIONSFirst attach Velcro strips. Then wash the garment separately in warm water on the gentle cycle. Hang to dry.FREQUENTLY ASKED QUESTIONSWhy would I need to order the dog diaper liners?The dog diaper liners are recommended for dogs over 55 lbs. or for dogs that are evacuating their entire bladder. If you have a dog in heat, the dog diaper liners are not typically required.Will these dog diapers hold feces?These dog diapers are primarily designed to hold urine, but depending on your dog"s anatomy they might even hold feces. If you are looking for a diaper that holds feces, we recommend using a disposable dog diaper underneath our washable diaper.