- Description An efficient packing solution, the 35-liter Ultralight Dry Sack keeps your gear organized and protected within your pack or travel luggage with a rectangular shape for a better fit. Available in five different volumes and four colors, it’s easy to color-code your organization too. Details: Roll-top waterproof closure Waterproof-coated fabric and seams Rectangular shape for efficient packing Meets IPX5, waterproof non-submersible D-ring for drying or attaching Volume: 35 litre Size: 53 x 33 x 36 (H x W x D) cm