Aerodynamic design road bike helmet with ventilation holes for improved comfort. Features an adjustable dial for sizing. Purchased about 4 years ago, used less than 10 times, with no major impacts and no noticeable scratches. Of course, it has the JCF (Japan Cycling Federation) official mark. - Brand: LAZER - Color: Yellow - Size: M-L 56-61cm - Design: Aerodynamic design - Features: With ventilation holes - Model: Road bike helmet Thank you for looking.