Quick release chinstrap mechanism for ease of operation & safety Outer Shell injected from special high impact grade of engineering thermoplastic High quality U.V. resistant Polyurethene paints used for aesthetic enhancement All STUDDS Models come in one standard size (58-60cms) which generally fits all Regulated density EPS concussion padding lined with specially treated anti allergic velveteen Removable and replaceable liners Dynamic Ventilation system for increased air flow providing more comfort to the rider while driving Quick realese Detachable chinguard enables the rider to use it as an open face helmet also The helmet is equipped with a second sun visor which is made from tinted Polycarbonate & is duly silicon hard coated Multiposition articulating optically true injected polycarbonate visor duly silicon hard coated for scratch resistance properties Certification: ISI Certified Helmet Type - Full Face