MIPS - MIPS technology allows the helmet shell to move relative to the head in the event of an oblique impact. This protects the brain from rotational forces and certain injuries. Click-to-Fit System - Height-adjustable adjustment system Reflective Stickers - for improved visibility Insect net Weight: 280 g (size M) Item Features Fly net, MIPS, reflective Use City / Trekking Color designation matte white Gender Adult Main color white Head circumference 52 cm, 53 cm, 54 cm, 55 cm Head circumference up to 55 cm Head circumference from 52 cm Adjustment system Click-to-Fit