SKYDEX Sea Shocks Helm Mat Removable SKYDEX anti-fatigue core for superior shock and impact protection and hassle-free cleaning No installation required! The helm mat weighs 10lbs and stays in place under its own weight. Soft side edges are more forgiving on bare feet and ankles with a textured top surface for better grip and durability Weighted base to prevent fly-away and sliding Product Dimensions: 17.25 x 32.25 x 1.5"