Helmet Alpinestars S-M3 Kids Raidum Yellow

The Alpinestars S-M3 Radium children's helmet offers safety and comfort for young riders.

Specifications:

• Lightweight thermoinjected shell: features a special blend of polymers with variable thickness, designed to offer the optimal combination of impact protection and lightness, helping reduce rider fatigue.
• Advanced thermoplastic construction: the lightweight outer shell is made from a technologically advanced, impact-resistant thermoplastic, available in three sizes (Youth Small, Youth Medium, and Youth Large); the SM3 Youth weighs 1060 g (ECE) and 1170 g (DOT), ensuring comfort during prolonged use.
• Dedicated DOT and ECE versions: shells are developed separately according to DOT and ECE requirements; in the DOT-certified version, the inner shell incorporates a composite fiber assembled between the outer shell and the EPS liner to maximize impact protection.
• Customizable fit: the fit can be tailored to the rider's head thanks to the crown pad and cheek pads, available as spares in different thicknesses for a more precise and comfortable hold.
• YM/YL growth system: Youth Medium (YM) and Youth Large (YL) sizes share the same EPS size, allowing you to start with a YM helmet and later convert it to Youth Large as the rider grows, using spare crown pads and cheek pads.
• Specific YS fit: the Youth Small (YS) size uses a smaller EPS and can only be customized via cheek pads; Alpinestars' extensive research has shown that YS-sized users are usually very young children, typically 3 to 4 years old, and therefore require a dedicated helmet fit.
• NEW ALPINESTARS SAFETY STANDARD: Alpinestars has introduced a new internal standard for the SM3 Youth to subject the chin bar to more demanding conditions than the type approval standard; to meet the new Alpinestars standards, both the shell thickness and the chin bar’s design structure have been optimized for superior impact performance.
• Equipped with an Emergency Release System and removable cheek pads that allow safe and easy removal of cheek pads while the helmet remains on.
• Stainless steel D-rings ensure a firm and secure fit.
• The SM3 helmet meets DOT certification and ECE 22.06 approval for worldwide use.
• This lightweight helmet features a thermoinjected shell that incorporates a specially enhanced polymer blend with different thickness grades, designed to offer the optimal combination of impact protection and lightness.
• The lightweight outer shell is made from a technologically advanced, impact-resistant thermoplastic in three sizes (Youth Small, Youth Medium, and Youth Large). The SM3 Youth weighs 1060 g (ECE) and 1170 g (DOT).
• Separate shell versions for DOT and ECE requirements; the DOT-certified inner shell version is built with composite fiber assembled between the outer shell and the EPS liner for maximum impact protection.
• The fit can be tailored to the rider's head thanks to the helmet’s crown pad and cheek pads, available as spares in different thicknesses.
• Youth Medium (YM) and Youth Large (YL) sizes share the same EPS size, allowing YM-sized riders to initially purchase a YM helmet and then configure it to Youth Large as they grow, using replacement crown pads and cheek pads.
• Youth Small (YS) has a smaller EPS size and can only be personalized using cheek pads. Alpinestars’ extensive research has shown that children using a YS size are very young, typically 3 to 4 years old, and therefore require a dedicated helmet fit.