The Pet Life 'Buckle Supportive' PVC Waterproof Dog Sandals are composed of Waterproof PVC and Feature Rubberized Grips along the Bottom Soles for great traction. These Dog Shoes are essential while walking your dog against the hotter terrain preventing your Dogs Paws against the Hot Asphalt and in addition to slippage that may occur with older dogs. These Pet Shoes slip on and Velcro closed for Easy On and Off access. These shoes offer High-Support whereas the support pressure is controlled by the tightness around the Dogs ankles. Comes in a set of 4. Available in Multiple Sizes and Colors. Sizing Instructions: Measure the Sole of your Pets Foot - Length x Width ("In" Inches): XS: 1.77 x 1.46 SM: 2.01 x 1.65 MD: 2.36 x 1.97 LG: 2.64 x 2.17