The Watershed Big Creek Backpack is a dry bag for day trips that will exceed you're expectations whether you're paddling in Arizona's rivers, canyoneering across the desert, or simply looking for something to keep your belongings dry at the beach. Made with high denier nylon and a polyurethane coating, this bag keeps whatever you have stored safe and secure during the entire trip, with Watershed's proprietary ZipDry seal and rolltop closure that keep your belongings dry. To keep the ZipDry seal from drying out, Watershed suggests you lubricate the seal with the included 303 Protectant wipe or Armor All on an occasional basis. There are padded shoulder straps and for easy carrying, and you can remove them when you need to store the pack in your kayak. There's also a top lug handle so you can move it across the beach with ease.