Ultra-lightweight 50 Denier coated fabric makes the HyperDry C one of the lightest and most waterproof bags on the market. The Ultimate Waterproof Carry Bag. New lightweight 4-way top with full-length dividers. Fully seam-sealed to keep the elements out. Welded zippers. Padded comfort strap design provides increased carry comfort. Updated Self-balancing X-Act Fit Strap System. Upgraded grab handle. Ultralight at just 4 lbs.