warning helmet / Motorcycle supplies

Motorcycle speeding accidents occur frequently, so we designed this helmet to alert people to drive safely.This helmet have a airbags which connect to the vent of the top .When the motorcycle faster ，the wind larger, the airbag will become bigger.When people drive to a certain high-speed,His head will be discomfort.And this bad feeling implies the danger of speeding which people can realize at the same time.