For the schools, head size management is simplified: one adjustable model covering from XS to L. Monobloc construction ( In-Mold manufacturing process ) with adjustment dial: one size helmet with adjustable headband covering from XS to L. Feather Weight: 320g (approximately 150 grams lighter than ABS helmet): probably making it the lightest helmet paragliding on the market. The ventilation is efficient: internal air circulation with external air intake. Closing the chinstrap is done via a toothed strap – intuitive adjustment without having to look for the best way to open the buckle: it easily opens by pulling the strap ! The internal comfort foam is removable and washable..