Grand Sierra Gloves Rag Wool (33380)Grand Sierra men's ragg wool glove in natural features full suede leather palms with turn down cuff and THINSULATE Insulation. 3M Thinsulate Insulation is made from special microfibers that make Thinsulate Insulation work by trapping air molecules between your customer's hands and the frigidness of the outside. Ragwool is a material that traps body heat for extreme warmth and wicks away moisture naturally. When combining these two materials you get