The innovative design of these gloves include an outer shell made from the finest side split cowhide which makes them more pliable, durable and heat-resistant. COMFOflex Gloves all feature our "Wide Body" sizing pattern which is 8% roomier than other large gloves, continuously welted seams, our patented COMFOflex lining, a patented palm and thumb reinforcement and seams sewn with Kevlar thread throughout the glove.