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 optimal ventilation In-mold shell construction Clear visor Click-to-Fit system - Height-adjustable adjustment system Straps and padding - 100% recycled polyester Ventilation - 13 vents ensure optimal ventilation Weight: 380 g (size M) Type article Area of application City / Trekking Color name matte cool grey Gender Adults Main color grey Head circumference 55 cm, 56 cm, 57 cm, 58 cm, 59 cm Head circumference up to 59 cm Head circumference from 55 cm Closure system buckle Adjustment system Click-to-Fit Visor fixed