Russell Carbon Tek Football Shoulder Pads, Black OS Technology Compression Vest - The inner compression vest is made of automotive grade foam which performs 20% better than standard EVA foam and can be used without the exoskeleton for non-contact days. Enhanced Range of Motion - The front exoskeleton is narrower and molded to fit the athletes body allowing for better range of motion. High Performance Carbon Fiber Exoskeleton - The exoskeleton has a narrow front design and molded to fit the athletes body allowing for better range of motion. Military grade buckle system specifically designed for a solid and secure fit with no unnecessary bulk making the shoulder pads perform better, longer, without slowing you down.