The Snugpak Silk Sleeping Bag Liner works because silk is a very poor conductor of heat.
Thus the Snugpak 100% silk liner will trap a lot of warmth within the sleeping bag, making the combination of Snugpak bag and liner a very warm and compact unit.
A silk liner is also a must when travelling in hotter or widely fluctuating climates, its natural heat-managing characteristics keeping the body comfortable in extremes of both heat and cold.
Gram for gram (it weighs just 150 g), the Snugpak Silk Liner is Snugpak's most heat-efficient liner.
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