STX Stallion 1K Arm Pads Protection meets perfection in the Stallion 1K Arm Pad. Designed with expertise gained over more than 50 years of creating equipment for the sport of lacrosse, the 1K series provides a durable, but functional solution to elite players looking for lightweight equipment built for the perfect hybrid of protection and mobility. Built with a high-density HD2 Polymer™ foam, this elbow pad is built to bear impact but will not absorb moisture, keeping it from soaking up sweat and stink, and preventing added weight in rainy conditions.