Therm-a-Rest on:
[Wikipedia]
[Google]
[Amazon]
Therm-a-Rest is an American outdoor product company specializing in
A Therm-a-Rest self-inflating mattress consists of an airtight
Therm-a-Rest siteCascade Designs site
{{Mattresses 1971 establishments in Washington (state) Camping equipment Manufacturing companies based in Seattle Manufacturing companies established in 1971 Mattress retailers of the United States Climbing and mountaineering equipment companies
camping
Camping is an outdoor activity involving overnight stays away from home, either without shelter or using basic shelter such as a tent, or a recreational vehicle. Typically, participants leave developed areas to spend time outdoors in more nat ...
mattress
A mattress is a large, usually rectangular pad for supporting a lying person. It is designed to be used as a bed, or on a bed frame as part of a bed. Mattresses may consist of a quilted or similarly fastened case, usually of heavy cloth, conta ...
es, sleeping bag
A sleeping bag is an insulated covering for a person, essentially a lightweight quilt that can be closed with a zipper or similar means to form a tube, which functions as lightweight, portable bedding in situations where a person is sleeping o ...
s, camp chairs, cots, and pillows. Therm-a-Rest began as a line of self-inflating camping mattresses, invented in the early-1970s by two former Boeing
The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and product ...
engineers and avid backpackers. The company was initially named Cascade Designs
Cascade Designs is an American company specializing in outdoor recreation products. It is located in Seattle, Washington and Reno, Nevada, and was founded in 1972 by two former Boeing engineers, who were avid backpackers. Their first product in ...
, which is now the parent company of Therm-a-Rest and other outdoor brands.
Product
A Therm-a-Rest self-inflating mattress consists of an airtight nylon
Nylon is a generic designation for a family of synthetic polymers composed of polyamides ( repeating units linked by amide links).The polyamides may be aliphatic or semi-aromatic.
Nylon is a silk-like thermoplastic, generally made from petro ...
fabric envelope filled with a sheet of low density, open-cell polyurethane
Polyurethane (; often abbreviated PUR and PU) refers to a class of polymers composed of organic chemistry, organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethan ...
foam. When a valve is opened the foam expands and draws air into the mattress. When the mattress has fully inflated, the user simply closes the valve. To increase firmness a few breaths of air can be blown into the mattress. To pack the mattress the valve is opened and it is rolled up tightly to force the air out, whereupon the valve is closed to prevent re-inflation.
References
External links
Therm-a-Rest site
{{Mattresses 1971 establishments in Washington (state) Camping equipment Manufacturing companies based in Seattle Manufacturing companies established in 1971 Mattress retailers of the United States Climbing and mountaineering equipment companies