Portable and compact: Maximize your packing with this Compression Sack. Shrink your sleeping bag size to up space in your backpack for any adventure. Enhanced waterproof protection: Made with sturdy nylon material that provides increased tear strength and reliable waterproof performance for outdoor use. Spacious storage capacity: Largecapacity design compatible with most standard, large down or cotton sleeping bags, helping you carry what you need for your travels. Convenient to use: Quickuse drawstring closure and compression straps allow fast packing and significant space saving. Use scenarios Backpacking trips where space in your pack is at a and keeping gear dry matters. Weekend camping or outdoor trips that require compact, protected sleeping bag storage. Travel or expeditions that need to consolidate bulky sleeping bags into a single, organized sack for easier transport.