Primary Optics provides today's readers with a collection of classic vintage styled wayfarer and oval shaped frames in a variety of patterns. They are all offered in 3 packs of readers for any reading occasion whether its your favorite book, newspaper or food menu. All glasses are spring hinge readers to proved more durability and quality during heavy use. With powered lenses ranging from +1.5 to +3.5 we are sure to provide you with readers that give you clear vision while reading.