Unused. The Reactor Fleece Liner is the warmest in the Reactor series, adding warmth to sleeping bags and can also be used as a summer sleeping bag. The Thermolite fleece is lightweight and warm, and the brushed finish provides a soft feel against the skin. The 1/4 zipper makes it easy to get in and out, and the paneled hood can be pulled out to further increase heat retention. More compact and warmer than other fleece liners Technical mummy shape, hood with one-handed drawcord Easy-to-use 1/4 zipper Can be used as a standalone sleeping bag in summer Includes an Ultra-Sil stuff sack Weight: 379g Size: 200cm long x 70cm wide Packed size: 13 x 22 cm diameter Comfort temperature: 18°C