Ultralight, yet durable, DCF11 Stuff Sacks should be a key component of every backcountry traveler’s kit because they provide redundancy to your systems. Not only do they help you organize your backpack, but because they are made with 100% waterproof Dyneema® Composite Fabrics (formerly Cuben Fiber), they can help keep your clothes, food and sleeping much drier in the stormiest weather. Perfect for storing a summer sleeping bag, clothing or food. These stuff sacks are now available in a beefier DCF11 Dyneema® Composite Fabric, offering a more rugged layer and extra abrasion protection. Store your food in your X-Large DCF11 Stuff Sack and hang it in a tree, out of reach from bears. Or use it to store your summer sleeping bag.