The inconspicuous design of the helmet makes sure it is at home wherever you take it.  An in-mould construction is used to keep the weight down and 28 vents make sure you are always cool and comfortable while riding. A dial at the rear of the helmet controls a basket that secures a large part of the back of the head. A quick turn of the Lazer Advanced TurnSys dial assures a snug yet comfortable fit that keeps the helmet firmly in place. Adjust it on the fly and start your cycling adventures. Features: Easy vertical adjustability: The Lazer Advanced TurnSys system provides a tailored fit that's easy to adjust on the move with a simple turn of the dial Diverse size range: Available in 3 sizes making it easier to find the perfect fit for improved protection and comfort Eyewear friendly: Eyewear can easily be docked in specific slots of the helmet LED light compatibility: Increase safety and visibility by attaching the Universal Lazer LED at the rear of the helmet via the Direct Mount Lightweight: 4% lighter than Lazer Tonic MIPS M CE Reduced plastics: 10g less plastics used than in Lazer Tonic MIPS M CE Sizes: S 52 - 56cm / M 55 - 59cm / L 58 - 61cm / XL 60 - 62cm Rated 4/5 stars by Virginia Tech* *Since 2011 Virginia Tech have been providing unbiased helmet ratings that allow consumers to make informed decisions when purchasing helmets. Their impact tests evaluate a helmet's ability to reduce the linear acceleration and rotational velocity of the head resulting from a range of head impacts a cyclist might experience. Helmets with more stars provide a reduction in concussion risk for these impacts compared to helmets with fewer stars.