* Nike Kids Unisex Size Chart * They'll step onto the field with confidence in the NikeĀ® Kids Charge Shin Guard. * Protective design features a hard shell for low-profile coverage and a foam back for comfort. * Pull-on stirrup design stays in place during play. * Foam back fits the contours of your shin for comfort. * 43% polypropylene, 33% EVA, 17% polyester, 7% rubber. * Imported.