Upgrade your camping gear with the Sea to Summit Reactor Extreme Liner Sleeping Bag Mummy. This high-quality sleeping bag liner is designed to keep you warm and comfortable during your outdoor adventures. The drawcord standard size is perfect for a standard 198cm/78in sleeping bag, and the mummy shape provides a snug and cozy fit. Made by the trusted brand Sea to Summit, this sleeping bag liner is perfect for any outdoor enthusiast. The Reactor Extreme Liner Standard model is easy to use and will keep you warm and dry all night long. Get ready for your next camping trip with this essential sleeping bag liner.