ColeTherm insulation, exclusive to Coleman, which is a hollow-core fiber, allowing for greater loft (a measure of the amount of space the insulation occupies and the amount of air the insulation can trap). The hollow-core fibers create pockets of air that serve as an extra barrier between the sleeper and the environment, maximizing thermal efficiency. Other Coleman sleeping bag features include:

• Thermolock: Reduces heat loss through zipper, keeping you warmer
• Fiberlock: Prevents insulation from shifting increasing durability
• Zipplow: Plows fabric away from zipper to prevent snags
• Roll Control: Locks bag in place for easy rolling
• Zipper Glide: Tailoring allows smooth zipper operation around the corner

About Coleman
The Coleman Company has been creating and innovating products for recreational outdoor use since W.C. Coleman started selling gasoline-powered lanterns in 1900. Inventor of the hugely popular fold-up camp stove, Coleman developed a plastic liner for his galvanized steel coolers in 1957--the birth of the modern cooler--and the company has been improving their utility and design ever since. The array of products that bear the Coleman name now includes just about everything you might need to work or play outdoors, from tents and sleeping bags to boats, backpacks, and furniture.