The Go-Specs series safety glass collection is now available in a Bifocal! It offers an alternative for workers requiring vision correction in three diopter strengths. Elvex Go-Specs primary objective is to provide an extra measure of protection in dusty and dirty environments. Wind blown particles such as dust, sand, cement, chemicals can cause serious eye irritation and damage. Go-Specs protect against dust, impact and UV radiation. This product is a hybrid of safety glasses and goggles. Meets or exceeds ANSI Z87.1-2010standards.