A large part of the helmet is made from recycled EPS materials with 20% cork AVID Progressive EPS - a combination of different density EPS ensures that both strong and weak impacts are optimally absorbed. At the same time, the material remains lightweight and provides the best possible ventilation MIPS B32 - MIPS technology ensures that in the event of a potential oblique impact, the helmet shell remains relatively well attached to the head. This protects the brain from rotational forces and certain injuries Click-to-Fit system - for an optimally adjustable fit FIDLOCK SNAP chin closure 14 white LEDs at the front and red rear light at the rear (rechargeable) Visor and straps with reflective lines COOLMAX padding Ventilation - 13 vents ensure optimal ventilation Weight: 350 g (size M) Features MIPS, reflective Gender adult Main color grey Head circumference 59 cm, 60 cm, 61 cm, 62 cm Head circumference up to 62 cm Head circumference from 59 cm Adjustment system Click-to-Fit Area of use city / trekking Manufacturer's color name titanium Type/kind of item Ventilation openings 13 pcs.