Simple Solution Washable Female Dog Diapers are the perfect answer for dogs experiencing excitable urinary, incontinence, or female dogs in heat and puppy training. Each diaper is reusable and lined with a soft plaid flannel fabric for comfort fit as well as an absorbent mesh liner for leakage protection. For light seasonal flow or minor excitable urination, the diapers may be used alone. For heavy seasonal flow or more serious cases of urination, simply attach a Simple Solutions diaper liner to the diaper's built-in mesh liner. Machine washable on gentle cycle, hang to dry. To insure a proper fit for the anatomy of your dog, choose the next size up.