The XS Scuba Seaside Deluxe Mesh Backpack Bag is big enough to hold a complete set of diving equipment. The bag has a water resistant internal zippered pocket made of tarpaulin for protection of delicate items. There is also an expandable external pocket for items you need close at hand. The two pocket and large mesh main compartment makes for a great organized bag design. The XS Scuba Seaside Deluxe Mesh Backpack Bag is easy to transport with the two comfortable padded and adjustable shoulder straps. Bag is also equipped with a side and top grab handles for easy lifting. The bag measures 15" x 28" (38cm x 71cm), has a volume of 6,300 cubic inches (103.25 liters) and weighs 28 oz. (793.8 g) when empty. Tough polyester mesh with thick, tarpaulin bottom panel makes this one durable bag design. The great thing about a mesh bag is it allows you to bring your travel gear bag when security is an issue, and once you arrive at your diving destination you can transfer you gear to the mesh bag and use it instead of getting the travel bag wet. This feature also gives you the option, at the end of the diving day, to submerge the entire bag into the wash tank on the dock or resort and rinse you gear while still in the bag. After rinsing simple hang, the bag up and let your gear drip and air dry, ready for your next day of diving.