Uvex Astrospec 3001 Over-The-Glasses Safety Glasses featuring impact resistant nylon black frame have lightweight design as well as contemporary over-the-glass style. They are an affordable alternative to expensive Rx eyewear and custom prescription eyewear programs. They are perfect to be fit over prescription eyewear. Glasses have cushioned duo flex temples to provide relief from pressure behind the ear and add extra comfort. Glasses have stylish and lightweight unilens that provide panoramic vision. Safety glasses come with gray polycarbonate Ultra-dura® replaceable hard coat lenses that are anti-scratch, resist chemicals and feature molded side shields, browguard with universal nose bridge for full eye protection. They provide UV protection and reduce outdoor sunlight as well as glare. Glasses allow for 4-way temple lengths adjustment and lens inclination adjustment for a comfortable wear. OTG bumpers when applied avoid vision glasses or PC vision glasses from connecting with the OTG glasses.