5mm High Density Padding: perfect protection for day-to-day use. Contoured Stretch Fit: uses a unique ‘armadillo’ strip that not only provides ventilation, but keeps the bag snug and secure around your board. 3D Rail Protection: eliminates seams and provides a continuous layer of foam that contours to the shape of the rail. Expandable Fin Wing: allows for you to carry your board with or without fins. Ergonomic Shoulder Pad: double layered and vented to provide the ultimate in comfort and support. Noncorrosive Zippers: built for strength, durability and resistance to seizing.