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The Sea to Summit Thermolite® Reactor™ Extreme Sleeping Bag Liner is the perfect companion to a lightweight sleeping bag. With this liner, you can use the same warm weather bag you've been camping in all summer for that one last autumn trip you're trying to squeeze in before the snow starts. Just pop in the Thermolite® Reactor™ Extreme liner for up to a 25°F warmer rating and you're good to go.
110 g/m² Thermolite Polyester Fabric – THERMOLITE® fibers add warmth by trapping extra air for insulation, just like the hollow-cores of polar bear or caribou fur. In the liners, the knitted THERMOLITE® fabric is soft and stretchy and comes in three different weights.
6'10" x 36"
Adds up to 25°F to the Temperature Range of Your Sleeping Bag
Lighter Weight, More Packable Than Fleece
Mummy Shape with Box Foot
Drawcord Hood with Mini Cord Lock
Packs into Included Ultra-Sil Stuff Sack
Size | Regular |
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Weight (g) | 399 |