U. S. Patented Design D866, 871 S | D811, 513 S. Kontour design gloves conform to the natural shape of the human hand and provide proper finger alignment. Kontour Thumb design moves the pesky seam away from the contact/wear area. Kontour Wrist patented wrist design to enhance comfort and safety. Supple yet durable premium genuine leather. Wool-lined - best natural insulator available. Sewn with Kevlar® for maximum seam strength. Complimentary 3in carabiner for keeping gloves together when not being used.