Perfectly suited for life on the go, these retro round glasses are fitted with Prizm lenses that enhance color and contrast without sacrificing style. 52mm lens width; 20mm bridge width; 137mm temple length 100% UV protection Prizm™ lens technology enhances color, contrast and detail for an optimized visual experience Unobtainium nosepads and earsocks ensure added comfort and no-slip grip Propionate Made in the USA