What's in the box:

Bike Helmet with USB Rechargeable Rear Light Road Cycling Mountain Biking Bicycle Sports Helmet for Men Women (White)

Features:
In-mold construction with polycarbonate shell and EPS foam to absorb shock for maximum protection.
Built-in USB rechargeable rear light with 9 lighting modes help improve visibility and safety while riding at night.
11 large vents help to circulate air through the bike helmet and keep your head cool.
Rotary dial adjusts to fit 58 - 62cm (22.8" - 24.4") head circumferences.
Moisture-wicking soft lining pad, removable and washable.

Specifications:
Material: Polycarbonate + EPS
Color: Black / Titanium / White (optional)
Vent: 11
Battery: 220mAh
Charging Time: Approx. 3 hours
Working Time: Approx. 6 hours
Head Circumference: 58 - 62cm / 22.8 - 24.4in
Dimension: 27 * 21.5 * 15cm / 10.6 * 8.5 * 5.9in
Weight: 324g / 11.4oz

Package List:
1 * Bike Helmet
1 * Charging Cable