Sea to Summit Reactor Sleeping Bag Liner

The THERMOLITE® Reactor Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner. If your adventures take you to colder climates, the Reactor Extreme will add plenty of warmth to a sleeping bag. Plus in warmer weather, it can be used as a ‘stand alone’ sleeping bag. The hollow core fibres of the THERMOLITE® fabric work like a polar bear's fur and, along with the knitted structure, trap plenty of insulating air. Super soft and amazingly stretchy, the Reactor Extreme uses a heavier version of THERMOLITE®  to provide extra warmth for an incredibly comfortable night’s sleep. Use one to build your cooler-weather sleep system and to help keep your sleeping bag clean too. Highlight : Best  Use: Backpacking & Camping Weight: 14 oz | 399 g Length: 6 ft 10 in | 210 cm Packed Size: 6.5 x 4.5 in | 17 x 11.5 cm   Features Traps insulating air to increase warmth of a sleeping bag by up to 25°F / 15°C Stretchy, Thermolite® fabric is incredibly comfortable. 110g/m² fabric is warmer tha