MATERIAL & SIZE: Made of Breathable mesh, very comfortable for daily wear, machine wash and reusable. Size Medium/12 - Waist: 14-15inche (stretchable)s; back length: 7.5-8.5inches (stretchable); suitable weight: 3-4kg SANITARY PANTIES: This sanitary pant provides protection for dog that encounters excited urination, minor incontinence among senior dogs and female pet in heat. Eliminate embarrassment and annoyance, avoid pet receive sexual harassment. DOG DIAPER: It can also be used as a diaper to solve the urinating problem of a puppy who does not how to urine in a designated place to prevent leaks and damage to rugs, carpets, upholstered chairs and sofas. ADJUSTABLE: There are two press buttons on the tighten strap, its easy adjust according to your dogs size. In addition, this diaper will not fall off with tighten strap. EASY TO USE: Place adhesive napkin or tissue on inside of garment to adsorb liquids, machine wash and reusable. Note: Please check carefully our size before order for a good fit. Many customer feedback it is too small so if your puppy is strong then the next size will be recommended Thank you