1 shells 2 EPS<br> Certified: FMVSS NO.218; ECE R22.05<br> GR: 1450 KG±50KG<br> Advanced ABS shell with high pressure thermoplastic technology<br> Multi Density EPS liner<br> Ventilation system with top and rear extractors liner<br> Soft dry comfort with hygienic treatment<br> Fully removable, washable interior liner<br> Padded chin strap with micrometric closure<br> <br> Sizing information:<br> Adult size Small: 55-56 CM / 21.65-22.05 INCHES<br> Adult Size Medium: 57-58 CM / 22.44-22.83 INCHES<br> Adult Size Large: 59-60 CM / 23.23-23.62 INCHES<br> Adult Size XL: 61-62 CM / 24.02-24.41 INCHES<br>