If you have any questions, please feel free to contact me, we will reply you within 24 hours.Product specificationsProduct type: full helmetProduct size: L = (55 ~ 59CM), XL = (60 ~ 61CM), XXL = (61 ~ 62CM)Shell material: ABS (material)Product weight: 1500gProduct standard: DOT, ECE standardcharacteristicDOT, ECE safety certificationAerodynamic shellHigh-quality Bluetooth headset, long standbyAir circulation window designDual lens designRemovable liningSafe and fast deductionNote1. Please allow the error range of 1-3cm as the range of manual measurement.2. Due to the difference between the monitor and the light source, the color display will be slightly different, thank you for your understanding!