FEATURES: Great for all rides whether road or trail Ventilation: 22 vents In-mold polycarbonate shell with EPS foam liner for impact absorption Full coverage shell for durability Removable snap-fit visor with reinforced anchors protects your eyes Reflective detailing for added visibility Complies with U.S. CPSC Safety Standard for Bicycle Helmets for persons age 5 and older TECHNOLOGY: Multi-Directional Impact Protection System reduces rotational forces from certain impacts and offers more protection Roc Loc(R) Sport Fit system provides an adjustable, comfortable fit SIZING: Universal Fit Size: 21.25 in. - 24 in. / 54 cm - 61 cm