ALPINESTARS MX SM5 RASH HEMLET Night Navy Yellow Fluo Glossy

The all-new SM5 ECE 22.06 helmet has been developed to offer MX riders a helmet that is safe and specially designed for optimum protection and comfort. The lightweight SM5 helmet features a thermo-moulded shell with a special blend of polymers, reinforced with different thicknesses and designed to offer an optimal combination of impact protection and low weight. The inner lining consists of a 7-part expanded polystyrene (EPS) construction with EPS in five different densities to ensure the right density in the right area for improved shock absorption.

Features:

The lightweight outer shell is made of technologically advanced, impact-resistant thermoplastic in three anatomical shell sizes and three individual EPS inner liner sizes with a combination of inner liner and cheek padding to provide 6 unique sizes and the best fit and protection.
A contoured, raised padded area effectively reduces the forces transmitted to the collarbone and a patented visor release system ensures that the visor is released with the appropriate, pre-determined force, regardless of the angle of impact.
The lower shell volume of the medium, large, XL and 2XL models has been designed to be approximately 3% wider to make the helmet easier to put on and take off. The increase in helmet volume has also improved the impact handling capacity, which is now 44% lower than the normal speed threshold.
For the new ECE 22 standard.06, the SM5 achieves a 44% better impact rating at normal speed compared to the current 33%, a 32% better linear impact rating at low speed and a 31% better linear impact rating at high speed, which dominates the standard.
The interior and exterior surfaces are designed to reduce the effects of oblique impacts. To cope with and mitigate these rotational impact forces, Alpinestars has developed a proprietary technology to create a low friction surface on the inner surface of the EPS liner. In accordance with ECE 22.06, which now also includes a rotational oblique impact rating, SM5 achieves a rating of 70% under the new regulations.
Multi-density inner lining to ensure the right density in the right area for improved shock absorption.
A newly designed nipple profile, where the base is specially shaped to create an embossed section that releases the collarbone, with a new, softer EPS liner that extends beyond the helmet itself and is covered with a more flexible rubber compound, reducing the risk of collarbone injury
Maximum ventilation and high heat exchange rate due to multiple air inlets and outlets
The helmet visor is designed to direct air into the vents to improve airflow
Cheeks with ERS rapid recording system
Drinking tube guide loops facilitate the installation of the drinking system
Specifications:

The ECE version of the SM5 helmet weighs 1350 grams for a medium size with helmet protector.
ECE 22-06
Double D-ring closure