The Ruffwear Polar Trex dog boots are designed for warmth, traction, and protection in winter conditions. The insulated upper softshell fabric creates breathable, weatherproof warmth in extreme cold and inclement weather. Ruffwear-designed Vibram outsole provides excellent traction on frozen or icy surfaces. The closure system combines hook-and-loop with hardware, cinching around the narrowest part of the dog’s leg to provide a secure fit. A pullover stretch gaiter keeps snow out and protects the hook-and-loop ankle closure from the elements. Reflective trim provides low-light visibility for safety. Available in sets of 2 boots and 4 boots. Just as you would with your gear, adjust fit and check tension of boots 15 minutes into your activity and throughout the adventure as needed. Washing instructions: Secure fasteners, wash in cold water with mild detergent on a gentle cycle, and air dry.