Bike Helmet for Adult Cycling Bicycle Scooter Adjustable Multi-Sport Rollerblading Skateboarding

3-Layer Safety System: ABS outer shell with impact-absorbing EPS foam and ergonomic fit pads ensures CPSC-certified protection. 11 Ventilation Zones: Strategically placed top and side vents enhance airflow to keep riders cool during extended use. Double Buckle & Spin-Lock Adjustment: Provides a secure, tool-free fit with a rotating knob for size customization. All-Day Comfort Design: Lightweight construction, a breathable mesh liner, and no-pressure padding reduce fatigue. Versatile for Multiple Uses: Compatible with bicycles, scooters, rollerblades, and e-bikes.