All CE EN966 certifited Standard EN966:2012+A1:2012. Please leave a message for the connector you need Kenwood Icom Yaseu Moto? Shell material by 3 layers of superfine glass steel and then add a layer of Kevlar or carbon fiber composite structure. Not ABS,ABS material Strength is not enough for airborne sports.Could also supply all real carbon material. Super light Weight:650g+/-50g High noise cancel system Characteristic: Since the back has paramotor frame,the helmet adopt a design that the helmet shell back section sub-circular,so there is no Activity obstacle and At the same time does not affect the use of the overhead umbrella.Application of standard communication system,very good noise cancel system,could let you fly better.A Larger field of view.According to your request,could add different Coated polycarbonate glass visor.Normal we have transparent,mirror, colourful mirror Material: Fiber glass The middle layer:Made up of famous EPS material,have good absorption of crash energy The inner layer:Comfortable, soft and can be parted and wash