Conforms to EN 166 1 F T EN170. From its non slip and adjustable bridge to its sports temples and its close fitting base 9 wrap design the lightweight 25g, this has everything a wearer wants and needs. Complimented with optical class 1 polycarbonate lenses in a variety of lens options and a panoramic field of view, the Rush is perfect for all situations. Supplied with free adjustable neck cord.