lightweight impact protection. the nike mercurial lite football shinguards are designed with a tough yet lightweight shell to help guard against the impacts of the game. a breathable, contoured sleeve offers a comfortable, secure fit during intense action.. benefits. low-profile shell for comfortable protection against impacts. nike guard lock sleeves for a secure, strapless fit. anatomical left/right-specific fit for contoured comfort. product details. meets nocsae standard for nfhs/ncaa. carrying case included. materials: guard: 69% k-resin/31% eva. sleeve: 65% polyester/19% rubber/16% spandex.. hand wash. imported.