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 Maximum Protection and Comfort: The Mips mountain bike helmet with EPP collarbone impact system and chinbar shock pads.Stay Safe and comfortable in any condition Lightweight and Breathable: Revolutionary injection-molded high-flow cooling ventilation channels- 27 vents,And it weighs just under 750g Convenience: The MTB helmet with removable and washable comfort liner,and with two sets of D-rings of different thicknesses.This mountain bike helmets for adults are suitable for head circumference of 54-62cm/21.26-24.40inch Suitable For Goggles: Goggle-strap channel makes it easier to keep your goggles in place, Pivoting visor helps protect the wearer's eyes from the sun, wind and rain OutdoorMaster MIPS Full Face Mountain Bike Helmet for Men & Women-Two Removable Chin Pad Mountain Bike Helmet,Ventilation Lightweight Racing Downhill DH BMX MTB Helmet