Cycling helmet bright taillight one-piece molding full-edge mountain bike helmet unisex

【High visibility】: This bicycle helmet is designed with a USB rechargeable rear light. The rear light provides higher visibility for vehicles or people behind you, providing better protection on city streets; with 3 lighting modes, you can easily change the lighting mode of the bicycle helmet light from steady to slow flashing or fast flashing with the click of a button.
【Cool riding】: 14 strategically placed vents actively capture cool airflow through the front vents and exhaust hot air through the rear cooling channel to reduce overheating and keep you cool on long rides; the bicycle helmet is lightweight and will not put too much pressure on your head even if worn for a long time.
【Removable and washable lining】: The inner lining is made of breathable mesh fabric to keep you dry while riding. There is also a head circumference adjuster that can be controlled with one hand for easy and quick adjustment. The adjustable head circumference size is L (58cm-61cm).