ROCKBROS Bicycle Helmet Nicolas Frantz Series Cycling Helemts Lightweight Thickened EPS Cushioning/Detachable Liner/Adjustable Head Circumference Safety Speed Ride for Moutain Bike MTB & Road Bike

Designed for a comfortable and secure cycling experience, this adjustable bike helmet features a durable PC shell and EPS foam construction to provide superior impact resistance and cushioning. Weighing only 0.55 lb (250 g), the helmet is lightweight and stress-free to wear, with 18 breathable vents to ensure optimal airflow and ventilation. The streamlined one-piece molding design effectively breaks the wind, while the adjustable size range of 21.65 to 24.02 inches (55 to 61 cm) ensures a customized fit for both men and women. Available in a variety of colors, this versatile cycling accessory offers reliable protection and enhanced comfort for your outdoor adventures.

• Designed with 18 breathable vents to channel air back and forth, effectively reducing air resistance and ensuring ventilation and comfort during your ride.
• Features a streamline one-piece design with a PC shell that wraps around the edges, creating a simple and beautiful appearance that can effectively break the wind.
• Made of a high-density PC shell and EPS foam for impact resistance, providing reliable protection for your head during cycling activities.
• Weighs only 0.55 lb (250 g), making it a lightweight and stress-free helmet to wear.
• Offers a 360-degree rotation adjustment, allowing you to easily customize the fit to your head size, which ranges from 21.65-22.83 inches (55-58 cm) for size M and 22.83-24.02 inches (58-61 cm) for size L.