[ULTRA-LIGHT MATERIALS] in-mold polycarbonate shell with EPS liner. Lightweight bicycle helmet, Breathable cushion inside it,Smooth streamline shape decreases reduce the drag, Ultra-light material. EASECAMP bike helmet is equipped with easy to remove flum to protect your face against branches, mud, sun and rain. [ADJUSTABLE SIZE] Suitable for 22."-24" head circumference, EASECAMP bike helmet is equipped with a regulator which can adjust the size according to your head circumference. [SMART DESIGN] Wind tunnel,duct design,effectively reduce wind resistance ,imitation integrally molded helmet to fit rider head, the adjustment twist,can adjust head circumference size. Ruggedness but not brittle to withstand the high intensity, strong foam density EPS foam synthesis makes riding safer. [EASECAMP BICYCLE HELMET FREATURE] Streamlined design, anti-windage, lightweight, strong, 28 air vents for allowing cool air in and warm air out. comfortable lining, and regulator. [EXCELLENT BICYCLE HELMET] High intensity, perfect workmanship, great anti-shock ability, EASECAMP bike helmet could safely provide good protection while riding or doing other outdoor sports.