Allows headband replacement on VERTEX and STRATO helmets, to extend their life Ready to install on helmets Easy to install and remove Compatible with VERTEX (1) and STRATO helmets Available in two versions: - standard closed-cell comfort foam does not absorb moisture or perspiration and is easy to care for (1) Versions starting in 2019 SPECIFICATIONS Head circumference: 53-63 cm Weight: 30 g Material(s): polyethylene, nylon REFERENCES References A010HA00 Version standard Guarantee 3 years Packing 1 WARNING: 2019 or newer Vertex Helmets Only