Slide Board Mitts & Booties by Obsidian The Obsidian Mitts & Booties are made from a special formulation of Polyester & Elasthan which maximizes durability and glide effect Extra Durable Slide Board Mitts & Booties that are Super Soft and stretch out to any size Protect your slide board all while getting the best results from a great glide Wear over your favorite athletic shoe and slide like a pro. The mitts will provide countless upper body workouts From Obsidian Slide Boards the brand you can trust, 100% Guaranteed!