Cordova Safety Products grades leather according to the area on the hide from which it is cut. The premium-grade leather comes from the side or shoulder and from areas higher on the animal that receive the least amount of movement and is more durable due to the density of fibers. This glove is constructed of an premium grain pigskin, lined with Thinsulatethe warmest thin liner on the market. Pigskin offers the greatest breathability due to large pores in the hide. It’s ideal for wet applications, given its tendency to remain soft after exposure to moisture. This glove provides a shirred elastic back and comfortable keystone thumb, which offers the highest range of motion.