High quality optical grade aspheric lenses for clear and accurate vision. 5 lens strengths options to choose from. Super slim notebook style case in contemporary styling. Clever double folding hinge allows the glasses to fold down completely flat for discreet storage and easy carrying in your pocket, handbag or glove compartment. Material: Lenses = Acrylic, Temple= Brass, Rim=Stainless Steel, Bridge=Nickel Silver, Tip=PC