Moon Mips Safety System Bike Helmet Features: Mips System Protection Lightweight in-mold construction, MIPS Brain Protection System reduces rotational forces caused by angled impacts to the head. [Excellent Safety Protection]Bike helmet men women with inmold technology joins thick EPS foam and outer PC shell to absorb and decrease the pressure caused by external impact forces during crash, giving you the maximum protection in all directions when road cycling or mountain biking. [Adjustable Size&Scientific Ventilation]Cycling helmet with dual fit adjustable design - back regulator and side straps are adjustable, and help adjust the head circumference, which meets the needs of most men and women. Road bike helmet in special aerodynamic design-25 breathable vents effectively reduce air resistance and reduce sweating. [Super Comfortable&Convenient Design]Mountain bike helmet removable inner pads make it easy to clean and comfortable to wear. Super lightweight 275g no more burden. Including an extra portable bag is very convenient for you to carry the adult helmet outside or for easy storage. Helmet Descriptions: Brand: MOON Size: M, L Size suggestion(Head circumference): M(55-58cm), L(58-61cm) Material: PC Shell+BLACK EPS Foam+Mips Linning Pad Model:KS29-Mips Technology: Inmold Process Use: Outdoor Cycling Sport What you can get: 1 piece helmet Tip: Sizes are measured by hand. If there are errors, please give priority to physical objects. Pictures are taken in kind, because the display is different, if there are errors, please give priority to in kind.