Description:Environment freindly solar powered helmet,energy saving and high technology

With cooling cool fan

High durability and good ventilation

Anti-pressure,hard enough to provide a safety working condition

Solar panel will supply continuous power as long as the sunshine is strong enough

Screw rotation switch makes you easy to adjust the size, fitting for any size head

Specification:Material: PlasticColor: Yellow, redSize: 28

5 x 22

5cm/11 x 8

9inchMinimum head circumference: 57cm/22

4inch (asjustable)Package Includes:1 Piece Safty Work HelmetNote:Please allow 1-2mm differences due to manual measurement

Please make sure the sunshine is strong enough,or the solar panel will be ineffective