SIERRA and ALPHA are the new Origine Demi-jet helmets: Sierra is the sportiest model with integrated solar visor, Alpha is classic style that in addition to the solar visor has a transparent protective visor scratches resistant; both helmets have removable and washable lining made in classic style.
Weight: 1050 gr. +/- 50 gr.
Approval: ECE R22-05
External shell: Thermoplastic resin shell
Inner Lining: Synthetic Lining
Technical Features