Gudook Matte Black Bike Helmet for Men & Women, Medium — LED Rear Light, CPSC/CE Certified Commuter Helmet

Gudook Bike Helmet with Light is an adjustable, ventilated adult cycling helmet with an integrated removable LED rear light and certified impact protection for urban commuting and trail riding.

This Gudook helmet combines a high-density EPS inner shell and a tough PC outer shell using in-molding construction for reliable shock absorption and impact resistance. It meets US CPSC/ASTM and European CE safety standards and adds practical visibility with a removable LED module offering steady, slow-flash, and fast-flash modes. Lightweight padding, a 17-vent system, and an easy dial-fit make it comfortable for longer rides while the washable liners keep it fresh.

How does the LED rear light improve visibility on evening rides?

The removable LED rear light gives three selectable modes—steady, slow flashing, and fast flashing—to help drivers and other cyclists spot your position and movement. The light is easy to operate with a long-press power button and clips securely into the helmet shell so it stays put on bumpy roads.

• Three modes: steady, slow flash, fast flash for different conditions
• Removable for charging or replacement without tools
• Low-profile mount reduces snagging and keeps the light centered
• Simple long-press control for on/off convenience

What level of protection and certification does this helmet offer?

Safety is built into the structure with a thickened EPS buffer layer and a PC outer shell assembled using in-molding technology to manage impact forces. The helmet has passed recognized safety tests and certifications for bicycle helmets in the U.S. and Europe.

• High-density EPS inner shell for shock absorption
• Durable PC outer shell for impact resistance
• Manufactured using in-molding for stronger shell-liner bonding
• Certified to US CPSC/ASTM and EU CE bicycle helmet standards

Will this helmet fit my head comfortably and stay secure?

Gudook designed the helmet with an adjustable rear dial and removable interior padding so you can dial in a snug, stable fit for most adult head sizes. The 17-vent layout and breathable liners help keep airflow moving while the cushioned straps and distributed padding reduce pressure points during extended wear.

• Adjustment dial fits head circumferences M: 53–57 cm, L: 57–61 cm
• 17 vents promote airflow and temperature control
• Thickened, washable inner lining for comfort and hygiene
• Lightweight design reduces neck fatigue on longer rides

What activities is this helmet designed for?

This helmet is aimed at riders who need a versatile, everyday protection option—from city commuters to weekend trail cyclists. Its combination of ventilation, fit adjustability, and integrated lighting makes it useful for biking, scootering, skating, and other active urban or recreational uses.

• Daily urban commuting and city roads
• Road and light-to-moderate mountain biking
• Scooter, roller skate, and skateboard use
• Outdoor recreation like hiking where head protection is helpful

Who is this for: The Gudook Bike Helmet with Light is intended for adult cyclists and active commuters who want a certified protective helmet that balances comfort, airflow, and visibility. Choose size M or L after measuring head circumference; it’s suited for men and women seeking a reliable, adjustable helmet for everyday riding, evening commutes, and mixed-terrain recreation.