Outdoormaster Mips Bike Helmet For Adults-Two Removable Liners Ventilation In MIPS Safety: The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the system can reduce harmful rotational forces.Whether you?re hitting the road for the day or just facing the daily commute, the OutdoorMaster MIPS helmet gives you the protection you need no matter where your wheels take you Get The Perfect Fit:Mips Adult bike Helmet with upgraded 3-way adjustable system, up and down adjustment function, 360 adjusting knob and adjustable side straps can be adjusted the height and circumference, making our cycling helmet fit different head size perfectly 19.69??-24.41??(50-62cm) and meeting the needs of most men and women Comfortable and Lightweight: Road bike helmet special aerodynamic design and 26 breathable vents, effectively reduce air resistance and reduce sweating. Super light-weighted bike helmet only 278g (0.61 lb) won?t make you feel too heavy when you wear it. Soft inner pads, chin straps and pads ensure a more comfortable user experience A Helmet For Multi-Sport: A unisex women?s and men?s mips bike helmet for riding a bicycle, road bike, skateboard, longboard, or e-scooter. Ideal for bike commuting, recreational cycling, and skateboarding How to Measure A Proper Helmet: To find the right size road bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick