Nike CR7 Mercurial Lite DESIGN: Low-Profile construction provides protection while not distracting the athlete. BACKER: The durable low-profile shell is bonded to a dense foam backing for excellent impact diffusion and comfort against the skin. SLEEVE: NikeFIT dry fabric sleeves are highly breathable and lightweight, designed to hold the guard secure against the skin. FIT: Anatomical left and right design is engineered and tested to fit the contour of the leg.