A large part of the helmet is made from recycled 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 optimal 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) Type Helmet Ventilation openings 13 pcs. Features reflective Area of use City / Trekking Color name black matte Gender Adult Main color black Construction In-Mold Head circumference 59 cm , 60 cm , 61 cm , 62 cm Adjustment system Click-to-Fit