Durable shell, lightweight feel and a contoured fit. The Nike Mercurial Lite Shin Guards give you comfortable cushioning and a durable shell with a lightweight sleeve to keep it all in place. The low-profile and left/right specific fit with perforated foam for breathability. Low-Profile Shell is Lightweight and Durable. Left/Right-Specific Design is Contoured for Comfort. Dense Foam Cushioned Against Impact and is Perforated for Breathability and Reduced Weight. Guard: 79% K-resin, 21% EVA. Sleeve: 65% Polyester, 19% Rubber, 16% Spandex. Hand Wash.