These are the most secure dog diapers I've used. The tail hole is made of soft, flexible material that fits snugly. (You can also cut and enlarge the hole to fit your dog's tail.) The gathered waist also fits securely. They are absorbent, so you can use them for extended periods with peace of mind. These M-size dog diapers are perfect for caring for your dog or cat, or for outings. 28 diapers per pack. - Size: M - Quantity: 28 diapers x 2 bags - Uses: Diapers for caregiving and outings Thank you for looking. Please feel free to comment if you have any questions. (*´∇｀*)