Simple Solution Washable Female Dog Diapers are made from lightweight microfiber fabric with re-positional closures and a tail hole for ultimate comfort. The soft, stretch fabric provides a comfortable and secure fit. These super-absorbent diapers provide long-lasting protection and are perfect for preventing messes from females in heat, urinary incontinence and excitable urination. The Medium size fits dogs weighing 15 - 35 lbs with a waist size of 15 - 23".