We've teamed up with RKD CO to bring you the most practical jet ski cap you'll ever own! - Made from a durable polyester microfibre fabric with 8% elasticity for a comfy fit. - Never lose your hat again thanks to the handy chin strap which is completely removable. - We understand how harsh the outdoor elements are so we've hit them with a high tech UV and water repellent spray to ensure you get the maximum use out on the water. One size fits all