The Sea to Summit Reactor Plus Thermolite Compact Liner. Increases sleeping bag performance by up to 20° F (11° C) with dual-weight Thermolite fabric. Our regular 80 g/m2 is combined with panels of 110g/m2 Thermolite in the core body and foot box areas adding extra warmth, while the ergonomic design shaves off excess weight. Ideal for gram counters under 6 feet tall.
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