Alpinestars SM3 Heat Helmet — Size S, White

The SM3 Heat Helmet is engineered for MX, enduro and off‑road use, optimized for ease of use, comfort and impact performance.

• Thermo‑injected shell with a special polymer blend and variable thickness for an ideal balance of protection and light weight.
• Patented low‑friction coating applied to the inner EPS liner reduces rotational acceleration from oblique impacts by acting as a slip plane similar to cerebrospinal fluid.
• Patented visor release system releases at a predetermined force to help reduce neck loads during impact.
• Maximized ventilation and efficient heat transfer via 10 inlets and 7 exhaust ports.
• Multi‑material construction and EPS energy‑absorbing layers engineered for consistent impact management.