For kayaking, canoeing, rafting, fishing, or hiking, the Sima Super Sports Pouch is a wonderful and portable Dry Bag to keep your valuables, electronics, or even an extra set of clothes clean and dry. Can be blown up so it also floats to the surface if submerged. In excellent condition with a strap for easy transport and an airlock sealing system. 16" tall x 17" wide not counting any of the area used to make it completely watertight. For me it was the perfect stow bag in my kayaking days.