Been curious about using a VBL (vapor barrier liner)? Here is an inexpensive and light way to learn about their advantages.
Bring this shorty VBL on your next cold weather trip. At night use it inside your sleeping bag to add warmth.
For cold conditions, wear over long underwear and inside sleeping bag to retain heat and limit insensible perspiration. This will keep your sleeping bag dryer, hence lighter and warmer and also reduce the amount of fluids lost by the body at night, so you have to drink less (melt less snow too). Especially good on extended trips where it is difficult to dry the sleeping bag each day. Also carried by mountaineers and search and rescue team members for quick emergency shelter ( it slows heat loss due to evaporation, convection and radiation).
Possible other uses include slowing heat loss in emersion cases, as a wind sock for helicopter evacuations, as a pack liner, as a solar still, or to keep your bottom half out of wind and weather when on a stand or bivy ledge. Very compact and light. Folds to fist size.
This version is a half bag, just 52″ long. Made of silicone coated 30d nylon it is sturdier than a trash bag, plastic or mylar versions. Weighs under 4 ounces so there is no great weight penalty to bring it along and in fact your sleeping bag will not pick up as much condensation weight over time. And with a half bag, you can still wear an insulated coat on your top half. Just snug the elastic cord around your waist. Your feet will get warm air flow too, unlike socks which isolate the feet.
Custom sizes available.
Made in the USA of USA fabric.
Colors, black, blaze orange, olive, silver