<b>Flammi Prism Glasses is great for using a laptop or reading a book in bed while lying flat</b><br><br> <b>Specifications</b><br> Material: Premium plastic frame+Metal hinge glass lenses<br> Color: Black <br> Item weight: 86g/3oz<br> Leg length: 14cm/5.5"<br> Frame height: 4cm/1.6"<br> Frame width: 16cm/6.3"<br> Bridge: 12mm/0.5"<br> Nose distance: 18mm<br> distance between two centers of inside lens: 6.8cm/2.6"<br><br> <b>Advantages:</b><br> √Changing the sight perspectives of wearer, breaking the rules of watching things, allowing users watch the images in front of them naturally, conveniently, comfortably and distinctly in a lying position <br> √Fit for men and women <br> √Extremely beneficial to people's physical and mental health<br> √Amazing glasses can effectively prevent and lessen the fatigue and discomfort of the neck, the lumbar vertebra and the shoulder portion.<br><br> <b>Please Note</b><br> 1. These glasses are to be used for a short periods of reading only. Please remove the glasses before falling asleep. Do not wear while walking/in motion as they can be disorientating. <br> 2. Since the lens is prism that made of glass, the bed eyeglasses is kinda heavy. Just do not wear it too long. <br><br> <b>Package </b><br> 1 x Prism Glasses