Thinsulate®

Thinsulate is a brand of synthetic fibers used as insulation. It is a combination of the words thin and insulate, which represents the basic properties of this material. The company 3M has been producing it since 1979.

Thinsulate insulation has been used for over 25 years. Why is Thinsulate insulation in footwear for cold weather so important? It is thin and lightweight while providing the same insulation properties as other insulations. Thin insulation is crucial for warmth in the shoe. Simply put, there is no room for anything bulky in footwear. The same goes for warmth. Feet, far from your body’s heat centers, need more insulation than other parts of your body. Thinsulate insulation provides nearly twice as much thermal resistance as foam, felt, or ordinary fiber and is one of the lightest synthetic insulations on the market.

ThinsulateTM insulation is used in your jackets, boots, gloves, and hats to help keep you warm when it's cold outside. Thinsulate insulation works by trapping air molecules between you and the outside environment. The more air it traps, the better it insulates. Because the microfibers in Thinsulate insulation are much finer than other fibers, they capture more air in less space and thus naturally ensure better insulation.