The Snugpak Compression Stuff Sacks are designed to reduce the bulk of compressible items. Compression Stuff Sacks are made with lightweight, durable nylon to endure the stress of compression without rips or tears. These sacks compress sleeping bags, clothing, or other gear when the compression straps are tightened around the sack. The 4 straps evenly distribute the force of compression to give your compressed items a uniform shape that makes them easier to pack, even when the sack is filled to maximum capacity. Compression Stuff Sacks reduce the bulk of packed items by 30 to 50 percent, providing you with more room in space-restricted packing situations. The stuff sacks feature a draw cord closure, which cinches tight to secure the bag�s contents. These Compression Stuff Sacks are offered in 4 sizes to accommodate the wide range of packing needs for travelers, hikers, and outdoors enthusiasts.