The Cotton Ascent Sleeping Bag Liner is designed to work seamlessly with Rab’s Ascent line of sleeping bags, but is compatible with most other sleep systems. The liner’s silk construction is incredibly soft and warm without sacrificing the durability you’d expect from all Rab products.Cotton sleeping bag liner provides an extra layer of comfortMummy shape offers plenty of room for adjustments and warmth to the feetIncluded stuff sack is easy to store and pack so you can bring it anywhereMaterial100% cottonShapemummyClaimed Weight11.9ozManufacturer Warrantylifetime