BELL Stratus MIPS Adult Road Bike Helmet Matte Black Medium ( cm)

Synthetic,LIGHTWEIGHT INTERNAL POLYCARBONATE ROLL CAGE 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.,MIPS-EQUIPPED - MIPS stands for Multi-directional Impact Protection System, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts,FLOAT FIT & NO-TWIST TRI-GLIDES - A minimalist, lightweight fit system with an easy-to-turn rubber over-molded dial for adjustments (integrated with MIPS). Quick-adjust fasteners that help keep straps flat and properly positioned,SWEAT GUIDE & OVERBROW VENTILATION - Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear. Overbrow Ventilation features intake ports on the brow of the helmet to usher in cool air and push it through the air-channel matrix for full-head ventilation,SPECIFICATIONS - Small ( cm), Medium ( cm), and Large ( 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 18 vents.