Aqua Marina Bt-88876 Race Inflatable Stand-Up Paddle Board, Signature Olive shape board for excellent speed performance Durable 6 inch (15cm) double-wall drop stitch core material Extra layers of post-inflation lamination for extra stiffness and block air leakage Stainless steel D-ring on tail for safety leash EVA deck: large diamond groove, heat Embossed, maximum traction and durability