Alpinestars Supertech M10 Helmet vs Alpinestars SM3 Solid Helmet

The Supertech M10 is the more protective, lighter helmet: a carbon-aramid shell, MIPS, four shell sizes, 28 vents and integrated eject removal put it a tier above the SM3. The SM3 is a solid thermo-injected motocross lid with ECE and DOT certification, rotational protection and a visor release system, and it covers kids' sizes. Buy the M10 if you race or ride hard and want the lowest weight and the most safety tech. Buy the SM3 if you want dependable certified protection and a broader size range, including youth fits.

• Choose the Supertech M10 if you want the lightest, most feature-loaded motocross helmet Alpinestars makes, with MIPS, a carbon shell and emergency removal.
• Choose the SM3 if you want proven ECE and DOT protection at a lower tier, with youth sizes and a visor release system.