A large part of the helmet is made from recycled materials. EPS with 20% cork AVID Progressive EPS - A mix of different density EPS ensures that both strong and light impacts are optimally absorbed. At the same time, the material remains light and allows for the best possible ventilation. In-Mold shell construction Click-to-Fit System - Height-adjustable adjustment system Visor with reflective line - made of cork with removable padding Strap 100% recycled polyester Ventilation - 13 openings ensure optimal ventilation Weight: 315 g (size M) Item Article Ventilation openings 13 pcs Features reflective Area of use City / Trekking Color designation black matte Gender Adult Main color black Construction In-Mold Head circumference 52 cm, 53 cm, 54 cm, 55 cm Adjustment system Click-to-Fit