【First Time Trying】 - Before selecting the correct magnification, it is recommended to consult an optometrist for accurate magnification recommendations. Otherwise, the multiple is too strong or too weak, will cause blurred vision or dizziness. For first-time multifocal reading glasses wearers, it can take one to three weeks to get used to. Pls don't drive car, do sports before fitting the glasses. 【Multifocal Sun Readers】 - Progressive reading sunglasses have 3 fields of vision to meet your needs. Top part is 0 magnification, suitable for walking, interacting and other 20ft distance view. Middle part is slightly reduced power magnification for computer work. Bottom part is full-power magnification for reading. 【Sunglasses with Readers Built-in】 - Not only sunglasses, but also reading glasses. Blue light blocking UV400 protection lenses can filter most blue light to reduce eye strain and shield your eyes from harmful UV rays so that you can even read books or using mobile phone under the sunlight. 【Top Clear and No Line Lens】 - The reading glasses just like general sunglasses, with no marks or lines on the lens that interfere with your vision and make it more stylish to wear. Use these progressive sunglasses for reading, using a laptop and sun protection. 【No More Switching Between Glasses】 - Anyone who has done this, knows the pain of switching eye glasses 100 times a day. The progressive lens allows you to read, look at a distance and look at close objects without having to changes your eyewear making it perfect for everyday use and preventing eye strain. multifocus reading sunglasses