The Carhartt Women's Back 40 Fingermitt WA747 is an insulated mitten. This Fingermitt is made for extreme cold. These fingermitts are built for work or play in extreme-cold environments. They're insulated with C100 3M Thinsulate that is a breathable material that is warmer than down, while keeping an ultra-slim profile that feels unrestrictive. They have a knit cuff closure at the wrist and finger holes inside mitt. The durable System 5 Synthetic Leather covers the knuckles and palms, giving these gloves durability and grip. System 5 Synthetic Leather is 3 times more abrasion-resistant than the cow grain leathers used in gloving. 41% more breathable than cow grain leather of the same thickness. It guarantee's a consistent quality, coloration and thickness.