Iso-Chill fabric on the back of the hand helps dissipate body heat, keeping it cool against your skin. Leather pattern on palm for protection and grip. Perforations on the palms and upper of the hand increase breathability. Terry panel on the thumb for wiping sweat. An elastic wrist cuff with an adjustable strap provides additional support when lifting the heaviest weights. Material: 50% goat leather, 20% polyester, 15% nylon, 10% elastane, 5% acrylic.