HOW TO CHOOSE THE RIGHT SIZE? Size S, suitable for small puppies and dogs (waist 23 cm to 38 cm). Size M, suitable for medium-sized dogs (waist 36 cm to 51 cm). Size L, suitable for larger dogs (waist 48 cm to 69 cm). Choose the size after measuring your dog's waist to ensure a good fit. WHY DO FEMALE DOGS NEED DIAPERS? When your cute dogs are untrained or unwell or have digestive problems, female dogs in heat, and dogs suffering from excitement urination or incontinence. WHEN SHOULD WE CHOOSE FEMALE DOG DIAPERS? The waterproof outer layer can protect against leakage and damage to your carpets, chairs, and sofas at home, and also protect your car seat when you want to take your children out. WHAT IS THE DOG DIAPER MADE OF? The outer fabric is made of environmentally friendly TPU, which is colorfully printed and waterproof. The middle layer is a 2-layer microfiber pad, which is absorbent and comfortable. The inner lining is polyester mesh, which makes the diaper breathable and dry. HOW TO WASH THE DOG DIAPER? The dog diapers can be washed by hand and machine and dry quickly in the air or at a low temperature in a tumble dryer. So it can be used for a long time. It is economical and environmentally friendly when you reuse the cloth diapers.