The "Dry Gear XL" is a fully dry bag that will keep your dry stuff dry or your wet stuff from getting everything wet. This large 35 liter bag has a bi-fold Dry Lock closure that, unlike other "dry" bags, keeps water from slipping through the seal. Made of extra thick waterproof PVC Tarpaulin material, it will hold up to your heaviest loads. It has fully adjustable high-density foam padded shoulder straps, a waist belt and a semi ridged padded back panel for heavy loads. We&&';;ve included adjustable webbing tie downs, that can be used with the gear attachments on the sides and front of the pack ,to secure your dive fins, gun or gear. Other features include a semi-dry front pocket for smaller items (it will stay dry as long as the bag is not submerged), four side compression straps, additional strap closure to secure the main opening, gear attachments on the shoulder straps and heavy-duty bottom feet to protect the bottom of the bag. Purchase the Gear XL dive bag, and you can attach (by way of the compression straps) the dive bag to this backpack. You will have the best of both worlds; a dry backpack for everything you want to stay dry, with an attached dive bag for your dive gear. Bi-fold Dry Lock closure keeps water from slipping through the seal Extra thick waterproof PVC Tarpaulin Fully adjustable high-density foam padded shoulder straps Semi-ridged padded back panel for heavy loads Semi-dry front pocket for smaller items