A cotton liner that is easily attached and detached with snap button fixing straps fitting through attachment loops at each corner of the bags. It will fit all Outwell rectangular sleeping bags (except Contour XL). Features: Sleeping bag attachment points Protects the sleeping bag Machine washable Carrybag included 1/3 length zipper for ventilation and easy access Size: 185 x 80 cm (LxW) Pack size: 22 x 10 cm Weight: 400 g Materials: 180TC, 80% polyester, 20% cotton Outwell Cotton Liner Single