Mountain Bike Motorcycling with Back Detachable Magnetic Visor Protective for Men Women

ADJUSTABLE: Turn the knob at the back for proper fit, the suggested head circumference is 22.4-24.4in. BREATHABLE: 22 air vents increase air circulation and reduce sweating to keep your head comfortable during cycling. PROTECTIVE & : Impact resistant PC is not easy to crack and high density EPS foam is buffered, which surely improve performance. PROTECTIVE: Detachable visor reduce the harm of strong sunlight while your face and eyes from wind, sand and dust. SAFETY : Built-in a back with 3 modes for warning and in dark riding.