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Just-1 presents the new J39 helmet, the new entry in high quality polycarbonate. Technical features: Outer shell in high quality thermoplastic resin. 2 shell sizes. 3 sizes of EPS. J.1.E.R. Emergency Cheek Pad Removal System. Double-D steel retention system. New interior fitting for greater comfort. Fully removable and washable interior. 8 front air intakes and 6 rear exhausts. Peak extension included in the box. Sizes: Small shell (XS / S / M) from 53 to 58 cm. Large shell (L / XL / XXL) from 59 to 63 cm. ECE Approval From 1380 Gr + -50 Gr.