Morey Kahala Pro 36" Boogie Board w/leash (Assorted Colors) 6lb IXL top-skin - IXL is a 3 mil - 6lb. iradiated, crosslink, polyethylene top skin. The unique bonding properties of the IXL foam and impenetrable seal with core. 6lb IXL rails 15 mil. HPDE (High Density Polyethylene),bottom-skin - strong bottom skin that adds stiffness and increases speed Bat-tail maximizes control by incorporating stabilizing wings to harness the wave's force. Increases speed and maneuverability. Channels - grooved slots on the bottom of the board help minimize turbulence and increase the board's hold to the wave. Thumb grips,Belly scoop,Wrist leash