Durahide™ DRY™ leather construction is fluid resistant yet breathable, and ready to work with no break-in time, C40 3M™ Thinsulate™ traps warm air to help regulate your body temperature in cold environments, Heavyweight Sherpa lining keeps working hands warm and wicks moisture to keep them dry, Gunn cut finger design repositions vulnerable seams for improved durability, Comfortable keystone thumb design