This extra light backpack has a water pressure resistance of 10,000 mm and comes with taped waterproof seams. The backpack can be folded up small and stowed in its carrying pouch. A breast strap with whistle is attached to the breathable, quick-drying shoulder straps. A water bottle fits in the side pockets, while the roll-top closure helps to store bulky items. The tapered overall profile ensures that the load on the back is distributed evenly.