ROCKBROS Bike Helmet, Lightweight Adjustable Size Cycling Helmet for Adults

• ULTRA-LIGHT 240G RACE BUILD: Weighs just 240g to dramatically reduce neck strain, letting you maintain an aerodynamic position longer for a true competition-grade advantage on climbs and sprints
• REINFORCED PROTECTION: Features a tough PC shell with an impact-absorbing EPS core. A special PC wrap seals the exposed lower edges of the EPS liner, guarding against damage and enhancing overall safety and durability
• REMOVABLE IONIC+ LINER: The integrated Ionic+ silver-ion liner actively inhibits bacteria growth and neutralizes sweat odours. It's fully removable and machine washable for lasting freshness and hygiene ride after ride
• 20-VENT AERODYNAMIC COOLING: Intake and exhaust vents create efficient airflow to keep your head cool and dry, reduces drag for faster, more stable riding in varied conditions
• ONE-HANDED DIAL FIT SYSTEM: A single-handed micro-dial allows quick adjustment for head circumferences of 58–62cm, with vertical tilt adjustment to secure a personalized, gap-free fit for superior stability and protection

ROCKBROS Bike Helmet, Lightweight Adjustable Mountain & Road Bike Helmets for Adults 240g Ultralight Aerodynamics for Mens Women MTB City Hybrid Gravel Commute 58-62cm Shell: PC + EPS foam Ionic+Liner: Polyester with foam padding Buckle: PP / POM Webbing: Nylon Head Circumference: 58–62 cm (Size L) Weight: ≈240 g (±30 g) (Size L)