NEW UPGRADE: We use new developed materials, which is lighter than the previous style. Moreover, the outer package has been reinforced to ensure that you can receive the complete new glasses.We have been constantly optimizing our glasses to ensure that it can always be in the first position. 90 VISIONTurn your view to a downward 90 degree angle, eliminating the need for head movement. PROTECT YOUR EYES AND SPINEAre great for preventing neck cramps or eye strain.Wearing this lazy glasses, you can enjoy lying down watching TV and lying on the pleasant feeling of reading. BED PRISM SPECTACLES: It's the best for the people who don't want to move. And its a practical and thoughtful gift. 5-YEAR GUARANTEE AND 100% AFTER-SALE GUARANTEEvinmax lazy glasses is a perfect gift idea for your family and friends.Sincerely, we can offer a full 5-year quality guarantee and friendly lifelong support.And if you have any question about vinmax lazy glasses,pls contact us freely.