The size medium has been discontinued. We apologize for any inconvenience. Watson's MyPaws Allterrain Dog Shoes are innovative dog booties especially for active and aging pets. Designed to protect your dog paws and provide superior traction and stability. Neoprene uppers and nonmarking rubber soles make them perfect for any weather and allday adventures in any environment. Provides improved footing for disabled dogs on slick floors. MyPaws dog boots are good for winter conditions as well. Solid rubber sole protects dog's paws from sharp objects and from the heat and cold. Nonmarking, rubber sole provides superior traction on smooth slippery surfaces. Protects delicate floors from scratches and from nail marks. Ideal for older and active pets that require superior traction and stability. Lightweight, breathable, porous design keeps dog's paws cool. Easy to put on and to take off. Two velcro straps wrap firmly around leg to keep shoe firmly in place. Two points of adjustability allow for a comfortable, customized, snug fit. Upper is made of lightweight, water repellant, quickdrying Neoprene making it perfect for water and allday adventures. Rugged, Ballistic Nylon toeplate resists damage caused by a dog's nails. Toeplate also provides additional durability and protection if dog drags a paw due to injury or disability. 3M Scotchlight reflective velcro straps provide superior safety and visibility at night. Will not retain odors. Sold as a set of four.