Sea To Summit Thermolite Reactor Plus Liner

The Sea to Summit Reactor Plus liner weighs just 9.3 oz. and adds up to 20degF of warmth to a sleeping bag. Or, use it alone in warmer conditions. . Made from two different weights of Thermolite, 110 g in the torso and footbox, 80g for the remainder provides warmth without extra weight. Thermolite is a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 20 deg. F of warmth to a sleeping bag. Contrasting color along the top edge makes it easier to find the opening. Mummy shape with a box foot. Drawcord hood with mini cord lock. Lighter weight and more packable than fleece. Packs into its own UltraSil stuff sack.