Sea to Summit Lightweight Compression Sack

The Lightweight Compression Sack is made from recycled 70D nylon rated to a 2,000mm hydrostatic head — enough to shrug off rain and splashes but not a true dry bag for submersion. A flip-top lid keeps the opening simple, the interior is light-reflecting to help you spot contents, and a carry handle makes it easier to grab off the pack. It suits compressing clothing, a sleeping bag or other soft gear to save pack space on backpacking trips where you want water resistance and lower bulk, but not for kayaking or river crossings where full waterproofing matters.