This was sewn for our newly obtained dog, but was never used. He ceased territorial "marking" inside very quickly, upon integrating into our household, so we never used this. 

Having a washable belly band for your male dog will be less costly and is better for the environment than single-use disposable canine belly bands. This is designed to secure a disposable absorbent inner pad, which is changed out when needed, with the outer wrap holding it in place and securing the pad. 

The outer layer is coated ripstop nylon, waterproof to help prevent leaks, with a cotton inner lining. The attaching strips of hook and loop closure are secure without the hassle of a zipper, which might also catch and pull on the dog's fur and hair. You can see Harry modeling the belly band in our photos. He weighs 16 lbs, and has a 15" girth. A larger waist can be accommodated by using the outer of the two Velcro strips, and a more slender fit using the inner most strip. So a range of 11.5" to 15" can be accommodated by varying which of the Velcro strips you attach to which. 

This wrap does not include any of the absorbent pads, but certainly there are many sellers for these items , and likely at your neighborhood pet supply store.