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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 than the 80g/m² Thermolite® used in the standard Reactor.
• Technical mummy-shape with drawstring hood.
• Easy care – machine wash with no special soap needed. Avoid fabric softeners and dryer sheets.
• Keeps sleeping bag clean.
• Packs into its own Ultra-Sil stuff sack.

Tech Specifications :

• DDED WARMTH : Up to 25°F / 14°C
• BEST USE : Backpacking, Camping & Winter Camping
• COMES WITH : Ultra-Sil stuff sack
• MATERIAL(S) : Thermo lite polyester fabric
• SHAPE :  Mummy