Our lightest, most versatile dry bag is now available in three new larger sizes: The 25L and 35L sizes are designed to accommodate a mattress or tent, while the oval-bottom 60L size is ideal for organizing and protecting gear inside a backpack. Regardless of size, all Storm Sacks feature a roll-top closure and sewn and taped construction to ensure watertightness, as well as PVC-free 210D PU-coated nylon that is long-lasting.