BELL Drifter Perfect Fit Lightweight and Durable Road Bike Helmet

FUSION IN-MOLDING POLYCARBONATE SHELL - A process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. FLOAT FIT & NO-TWIST TRI-GLIDES - A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments. Quick-adjust fasteners that help keep straps flat and properly positioned. SWEAT GUIDE - Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear. SPECIFICATIONS - Small 52-56 cm, Medium 55-59 cm, and Large 58-62 cm Sizes. Important: always take a head measurement. Head sizes and shapes can vary, even within an age range. Using a helmet that does not fit can be dangerous; 19 vents.