The Sea to Summit Reactor Sleeping Bag Liner with Drawcord is an ultra-light, top-selling thermal sleeping bag liner, ideal for cold conditions. Featuring a technical mummy shape with a drawstring hood, it offers superior warmth and flexibility with its Thermolite Pro fabric and infrared technology. Easy to care for, it packs compactly into its own Ultra-Sil stuff sack. The biocide-free FFL odour control ensures freshness, making it a versatile addition to your camping gear.Technical Mummy-Shape with Drawstring Hood: The liner’s mummy shape and adjustable drawstring hood provide a snug fit and enhance thermal efficiency.Easy Care: Designed for simple maintenance, ensuring convenience after each use.Packs into its Own Ultra-Sil Stuff Sack: The liner compresses compactly into a lightweight, durable stuff sack for easy storage and transport.FFL Biocide-Free Effective Odour Control: Incorporates biocide-free FFL technology for effective, odour-free performance. Sea to Summit Reactor Sleeping Bag Liner with Drawcord