What activities is it suitable for? Walking-Tourism Technology & Gadgets Supratherm Material is an excellent thermal insulator due to its unique structure. The reverse side is made of fluffy fibers, between which air pockets are formed to maintain body heat. Quick moisture wicking from the body to the surface of the material and low moisture absorption of the fibers support quick drying. Regular fit Clothing marked in this way has a straighter, semi-fitted silhouette.