S.O.L Survive Outdoors Longer Escape Series 70 Percent Heat Reflective Durable Lightweight Emergency Bivvy, Green

Increases sleeping bag performance by up to 25Â°F (14Â°C) with super-insulating 110g/mÂ² Thermolite fabric. Thermolite is a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Spacious design allows for a comfortable night's sleep, even when the mercury plummets. Perfect for extending the season of your sleeping bag.

Insulated sleeping bag liner adds extra warmth and personal hygiene to any sleeping bag
Reactor Extreme features heavier weight Thermolite throughout and adds up to 25F degrees
Thermolite hollow core insulation is lightweight, soft and comfortable with stretch knit construction
Mummy shaped with toe-box, draw cord hood and included stuff sack
Extreme (M) Dimensions 83 x 35-inches; packed size 6.5 x 4.5-inches; weight 14oz
Insulated sleeping bag liner adds extra warmth and personal hygiene to any sleeping bag
Reactor Extreme features heavier weight Thermolite throughout and adds up to 25F degrees
Thermolite hollow core insulation is lightweight, soft and comfortable with stretch knit construction
Mummy shaped with toe-box, draw cord hood and included stuff sack
Extreme (M) Dimensions 83 x 35-inches; packed size 6.5 x 4.5-inches; weight 14oz

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Sea to Summit Reactor Insulated Sleeping Bag Liner, Extreme (83 x 35);