The Power Gripz are designed by linemen for linemen and proven to be superior for grip, arc protection, heat penetration and all-weather dexterity. Made of high-quality cowhide leather with Kevlar stitching, The proprietary POWER GRIPZ pads reinforce the fingertips and palm to enhance durability and protection while maintaining high dexterity. 40 cal/CM2. | Patent-Pending Grip | Kevlar Stitching | Top-grade Cowhide Leather |Adjustable Pull Strap Buckle | ASTM F696 (ASTM F-2675) Type: Standard Leather Protector Glove Length: 12″ Use: with class 1-4 Rubber Insulated Gloves Sizes: 8-8.5, 9-9.5, 10-10.5, 11-11.5,12-12.5 (Click here for sizing chart)