7U Adults Bike Cycling Helmet, Adjustable Mountain Road Bike Helmet for Men and Women, Lightweight Microshell Design Bicycle Helmet Adjustable Dial for Head Size 20.9 to 24.8", Black

TOUGH & LIGHTWEIGHT - Mountain cycling helmet is made of strong PC shell and high quality EPS foam, providing more safety with the integrated-moulding technology.
PROTECTED, VENTED AND COOL - Everything the cyclist in you could ask for: shock absorption technology, 22 massive air vents for an outstanding airflow across the head and a low profile, innovative design!
A HELMET THAT ACTUALLY FITS - Bike helmet adjusts in seconds with a quick release chin strap and a dial fit at the back adjustable horizontally and vertically for a tighter and snugger fit. Suggested head circumference: 20.9" to 24.8" (53-63cm).
INTEGRATED SAFETY REAR LIGHT - Bicycle helmet with USB rechargeable light. Best for night riding with 3 lighting modes, Steady, Flash and Wave.
ALL ACCESSORIES INCLUDED - This bicycle helmet for adults has all the added features you need: sleek matte design for a classy look, washable pads and a cushioned chin strap for increased comfort.