-High strength ABS plastic shell, lightweight and impact resistance. -Sleek and lightweight design reduces wind noise. -Multi-density EPS safety buffer layer offers state-of-the-art energy absorption. -Comfort soft 3D padding liner uses breathable technical fabric, hypoallergenic, fully removable and washable. -Intake and exhaust ports ensure plenty of ventilation to keep you cool -Quick release buckle for a secure fit that will stay on your head -Through National DOT Certification, Safe and Reliable