SPACE SURVIVAL BAG - www.mosquitohammock.com

This reinforced reflective polymer bag is designed to maintain body heat and help prevent hypothermia in survival situations. The bag opens with a zipper that allows your body (clothed or unclothed) to enter the bag. Then the zipper is closed and the string can tighten the opening around the head and face to maintain as much body heat as possible.

The bag is 8' long allowing for ample space for people with large bodies. This bag can also be used as a vapor barrier liner (VBL) inside of down sleeping bags in extreme cold conditions. The body has two types of persperation - sensible (sweat) and insensible (moisture to keep the skin soft). We do not realize that in extreme cold, there is very little moisture in the air, therefore the body sends moisture to the surface of the skin to maintain the skin's normal humidity level. When we first get into our sleeping bags, they are warm. Throughout the cold nights, they can then become cold, because the moisture that our body sends to our skin evaporates into the sleeping bag. This moisture conducts the heat out and the cold in! By using a VBL inside of the sleeping bag, our bodies perspire insensibly to the normal skin humidity level, and this bag prevents this perspiration from evaporating into the sleeping bag. The skin stays moist; the body stops perspiring; the sleeping bag stays dry, and you stay warm.

This technology has been used in countries with very cold conditions - like Norway and Scandinavia - for a long time. The survival bag packs tightly and weighs .5kg. It is a good piece of equipment to have on an expedition in case of accident to prevent hypothermia. In extreme conditions, two people can get into one bag to share body heat.