FCS Triple Travel Cover Shortboard - Select Size 10mm Dual Density Padding: provides a tough layer of protection against impact. Heavy Duty Polyester Skin: heavy duty outer layer for added protection. Padded Rail Protection: internal layer of protection along the zipper path helps to prevent rail damage. Contoured Coffin Wall: matches surfboard rocker and adds additional strength. Ergonomic Shoulder Pad: double layered and vented to provide the ultimate in comfort and support.