This Class 3 waterproof duffel bag features exterior sides of 600D Nylon fabric for comfortable and stylish durability; with an interior of seamless RF welded PVC for a true impervious seal. After you roll down the top; the roll is held in place with the Velcro strip and secured with both top and side buckling cinch straps. Other features of this OverBoard waterproof duffel bag include a large outer mesh pocket with Velcro closure; 2 internal zippered mesh pockets; 1 internal wet dry compartment; top carry handles; 4 d-rings for multiple attachment options; and an adjustable removable shoulder strap. Closed Dimensions 12.5inW x 10.5-Inch H x 26.5-Inch, Capacity 3,500 cubic-Inch