NIKE Mercurial Lite Shinpads Anatomical Fit - Contoured Anatomical left/right design for an enhanced fit. Nike Guard Lock sleeves - For a secure, strapless fit. Low-Profile Shell - For comfortable protection. Dimensions - 160-170 cm based on size medium Materials: Guard: 72% polypropylene/28% EVA. Sleeves: 65% polyester/19% rubber. 16% elastane.