3 sizes for different dogs - M, L, XL. Choose the correct size according to the size chart. If your dog is between two sizes, choose the larger size. WATERPROOF FABRIC - The upper of the dog shoes is made of waterproof and breathable fabric to keep paws comfortable, clean, dry, and warm. Non-slip Sole - The sole is made of rubber and PVC, providing wear resistance and non-slip performance. Helps prevent slipping when walking in rain or snow. Suitable for indoor and outdoor use. SAFE AND ADJUSTABLE - Easy to put on and take off. Features wide slit openings and two adjustable reflective straps for a secure fit and improved visibility at night. PROTECT YOUR DOG'S PAWS - Helps protect your dog's paws and nails from hot or cold pavement, hardwood floors, sharp rocks, broken glass, burrs, spikes, snow, and other harsh surfaces.