Fold-down StormStrip closure system seals water out of the duffel Heavy-duty UV and wear-resistant PVC-free material with RF welded seams Stackable flat-base design makes packing, storing and rigging easy Webbing chains offer ample attachment points to secure other items to the bag Cinch the 4 compression straps to add extra pressure on the seal for the driest possible protection NRS High Roll Duffel Dry Bag - There’s an unspoken rule: what you need is always at the bottom of your bag. The NRS High Roll Duffel Dry Bag saves time on the search without compromising on storage space or reliably rugged waterproof performance.