Hard Hats Safety Helmet Ventilated Breathable Hard Cap with Solar Fan and Removable Adjustable LiningItem specification: material: plastic weight: 400gFeature:The solar panel is waterproof so you don't have to worry about damage in rainy days.Solar powered design, where there is sun light, the fan can bring you cool wind.This safety helmet adopts high strength ABS plastic material with strong impact resistance to give better protection to your head.Plug type adjustment for you to adjust the tightness and it can ensure stability, convenience and durability. Four-point cotton lining and double belt design is safe, comfortable and breathable for wearing.