The Brass Knuckle SmartSkin Nitrile Gloves are double-dipped in nitrile butadiene rubber (NBR) to offer wearers additional protection and grip. SmartSkin starts with a thin gauge, 18 mil nylon shell with a full NBR over coat. Then a second coat of NBR is added to full fingers and palm. This second coat has a sandy finish that provides additional grip, even when wet. The gloves are latex-free, puncture and tear resistant, and provide protection from most liquids, including chemicals and oils. They're also designed to cover the wrist and lower forearm.