▪️ Outer Material:

ABS high-strength plastic / PC (Polycarbonate) — durable, impact-resistant material.

▪️Inner Structure:

EPS (Expanded Polystyrene) protective layer that absorbs impact energy.

▪️Size Adjustment:

360° adjustable sizing mechanism (adjustable dial-fit system) with a rear rotary dial.

**Certificates and Standards:**

CE EN1077 Class B / ASTM F2040 — international safety standards.