Sportdog White Regular Plastic Dummy. These SportDOG specific Dog Gear and Training tools are not too hard or too soft so that they can withstand multiple throws and are buoyant so that they don't sink. Additionally they are designed with an air valve so that you can adjust weight and buoyancy. The knobs on the back are designed to prevent hard mouth. Additionally they are designed with air ports so that you can fill them with air to adjust buoyancy and weight. The training dummies that we offer are made of BPA-free material. Specifications for Sportdog White Regular Plastic Dummy: Manufacturer: SportDOG Fabric/Material: Plastic Length: 14.9 in Dimensions: 2.15 X 8.25 X 14.90 in Package Contents: Sportdog White Regular Plastic Dummy Sportdog White Regular Plastic Dummy