If reliability is rooted in simplicity, it doesn&';t get more reliable than the Thunderhead Roll Top Dry Bag. Make no mistake though, those extra layers you packed for camp will remain dry through everything from a small summer shower, to an unexpectedly bumpy ride down the river. Forget about rips and tears. Constructed with 1680D recycled nylon, the Thunderhead Roll Top Dry Bag is designed to withstand whatever you throw at it. FEATURES 1680D TPU coated nylon Cyclepond fabric Welded seam construction Roll top waterproof closure Built in D-ring attachment point 13"x9.5" when rolled closed .8lbs