Since designing the UdderFun Pocket Toss for Lori and her Belgium Tervurens, this toy has become a popular favorite. We take a "milker" and attach 3/8"(9mm) waterproof MFP rope made in Canada. It’s strong and durable, resistant to rot and abrasion. The rope is knotted to hold the milker in position and provide a hand or mouth grip on the top. It tosses well and fits nicely in your pocket. We use only DeLaval silicone milkers (properly known as "inflations") that underwent vigorous testing and proved to be the most durable of all brands. They are sterilized to remove any bacteria but still have the dairy farm scent that some dogs love! Measures 15” (38cm) long.