If reliability is rooted in simplicity, it doesn't get more reliable thanthe Thunderhead Roll Top Dry Bag. Make no mistake though, thoseextra layers you packed for camp will remain dry through everythingfrom a small summer shower, to an unexpectedly bumpy ride downthe river. Forget about rips and tears. Constructed with 900D TPUcoated NewStream fabric, the Thunderhead Roll Top Dry Bag isdesigned to withstand whatever you throw at it