Made of high-quality 16 ounce fleece. Fleece is soft and warm for your dog?s tender feet. Fasten on your dog?s foot with one Velcro strap. Generous Reprotek patch is sewn on the sole to prevent skidding and sliding. Fleece is not water resistant, but dries quickly if it becomes wet. Designed for indoor use or for protection from cold. Size: X-Large 4 width Set of 4