The palm, fingers and knuckle strap are constructed of durable grain leather. The reinforced leather palm patch increases overall wear, grip, and durability. These gloves are insulated with 100-gram 3M Thinsulate insulation to keep your hands warm when you're out working in the cold. The gunn cut places the seam at the natural crease of hand, increasing overall comfort. The elasticized wrist keeps dirt and debris out, while the safety cuff helps protect your wrist.