Decade Frances 70s Sunglasses. The FRANCES is 1970s beach fashion that achieves a summer look all year long. The tortoise frames are marked with attitude and colored lenses for those who both look and walk the part. Durable acetate frame. 58mm lens width. 17mm bridge width. 145mm temple length. 4 base CR-39 lens with 100% UVA/UVB protection. Microfiber cloth and squeeze top soft case included. Imported.