This OverBoard bag combines a waterproof dry bag with a backpack to create an easy-to-carry pack. Made out of PVC bonded nylon fabric, PVC tarpaulin, and high frequency welded seams. Equipped with a Fold Seal System™ with an IP66 waterproof rating. Very comfortable to wear with fully adjustable backpack and chest straps and a ventilated back panel to help fight a hot back. Large side mesh pockets to store absolutely anything round out this series.