Good for health no longer feel stiff neck, pillows or tension when reading or watching TV in bed. Prism bed glasses allow users to read text or watch TV from a lying position without lifting or bending the neck, preventing the pressure on the neck andeyes caused by awkward and uncomfortable reading posturesOne size fits all Prism glasses can be worn on prescription glasses to bring clear and clear images to any user. The glasses do not magnify or focus the image, but simply tilt the image at a 90 degree angle to view the vertical image in a horizontalpositionLightweight and portable- glasses are made of high-quality optical reflective prisms and sky blue durable plastic materials. The shape of special glasses is similar to ordinary glasses. Lightweight and easy to travel. Put it in your bag or take it ona plane or morning train to and from get off workWidely used these flat reading glasses help bed patients, those recovering after surgery, pregnant women to rest in bed, or anyone else who needs to stay in bed for a long time in order to ease and re-engage in entertainment. It is also a great optionfor those who spend time reading or watching TV and struggling to find a comfortable or sustainable posture