CORDOVA SAFETY PRODUCTS grades leather according to the area on the hide from which it is cut. The premium-grade leather comes from side or shoulder and from areas higher on the animal that receive the least amount of movement. Select-grade leather is selected from the areas of the hide that don't quite make the Premium grade, but are still a higher-quality leather. The regular and economy cuts are selected from the middle and lower portions of the hide, making it thinner than other grades. This glove is constructed of select grain cowhide. Cowhide is comfortable, durable, breathable and offers excellent abrasion resistance. It is unlined and features a shirred elastic back and keystone thumb, which offers the highest range of motion and comfort. Select Grain Cowhide Driver Unlined Shirred Elastic Back Keystone Thumb Sizes: XS-2XL