The all-new SM5 helmet is the result of more than five years of intensive study, development & testing. Alpinestars scrutinized every possible aspect to engineer a helmet that is safe & thoughtfully designed to deliver optimal protection & comfort. This lightweight helmet features a thermo-injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection & light weight, while the five density EPS liner ensures the correct density in the correct area for enhanced impact absorption. Other key design features include an engineered raised area with padding to effectively reduce the forces transmitted to the collarbone & a patented visor release system that ensures the visor is released with the correct pre-determined amount of force, irrespective of the angle of impact. Features Emergency release system & removable cheek pads permit the safe & easy removal of the cheek pads while the helmet is still on, while the 3D contoured foam ensures rider comfort. Removable comfort liner with Silverplus® treated anti-bacterial fabrics for excellent moisture wicking, effectively drawing perspiration away from the skin. Anti-microbial liner is removable &
Washable.
Hydration tube channels are integrated into the helmet’s cheek pads for convenience & performance. Soft textile chin strap is 26 mm & is wider than certification requirements for optimal safety & rider comfort. Stainless steel D-rings to ensure a tight & secure fit. A size Medium weighs 1260 gr. (ECE). The SM5 helmet conforms to ECE 22.05 homologation. Construction Lightweight outer shell is constructed from a technologically advanced impact resistant thermoplastic in two sizes. The inner & outer surfaces are engineered to minimize the effects of oblique impacts. Multiple density inner liner to ensure the correct density in the correct area for enhanced impact absorption Patented visor release system ensures the visor is released with the correct pre-determined amount of force, irrespective of the angle of impact. Maximized ventilation & high levels of heat transfer exchange thanks to multi-air inlets & exhaust ports. The visor has been designed to direct air into the ports for enhanced airflow. Protection Side shell couple with soft EPS foam prevents damage to collarbone in the event of a crash. Note Please be aware, as long as nothing else is written in the item description: All helmets will be delivered only with the ECE certification by default