The Trek Pro Dry Bag is soft and pliable and therefore perfectly suited for any multiday adventure. It's made from a lightweight, 40D waterproof and durable nylon fabric with a polyurethane coating. They use the same non-wicking roll-top closure method as our other dry bags and feature a speed web opening for those times when you need quick and easy access. Ideal for backpacking, cycle touring, traveling, ski touring and more. The Trek Pro Dry Bag is made with smart solutions and practical features to ensure easy access to your essentials. Everything at hand for your next adventure.