With the fast, aggressive F50 design, the soccer shin guards feature a light, flexible shield and slip-in strapless construction for the utmost in lightweight protection. adidas F50 Pro Lite 13 shin guard features a sleek profile with durable protection. Slip-in construction with compression sleeve for support of blood flow to the center of the body, sleeve also offers support for the shin guard. Soft synthetic lining for comfort. 100% polypropylene.