展开Bike helmet in black, vintage spirit of the Californian bikers of the 50s and 60s. br / br / br / br / Details: br / • Magnetic closure buckle to avoid pinching; br / • Discreet integrated visor; br / • Vegan leather straps to stay comfortable and sweat-free; br / • Adjustment wheel for optimal fit; br / • 7 vents and 3 cooling channels to stay cool. br / br / br / br / Thousand helmets are available in 3 sizes. To make sure you don't make a mistake, measure your head circumference with a tape measure. br / • Small: 54-57 cm br / • Medium: 57-59 cm br / • Large: 59-62 cm br / br / br / br / Thousand helmets combine safety with elegance, perfect to accompany you. They also allow you to attach your helmet to your bike and leave it safely. Indeed, there is a secret poplock passage behind the brand logo for your anti-theft device.