Specification:-Size:Large(universal and for most of the myopia glasses)-Weight:150g-Frame Material:Plastic-Lens Material:Resin-Style: Horizontal lazy glasses-Package Included: 1*Horizontal lazy glassesProduct DescriptionThe lazy person's ultimate accessory!Read in bed while lying flat: the glasses' specially mirrored lenses project the text from the book in your lap to your line of vision even though you're facing the ceiling!"Please note":These glasses are to be used for shot periods of reading only. Please remove the glasses before falling asleep. Do not wear while walking/in motion as they can be disorientating.