[ 3 LEVELS OF VISION ]: K KENZHOU multifocus reading glasses feature 3 levels of vision in the middle part of the lens(Please refer to the picture of our listings). Bottom of the lens is for looking close, Center of the lens is for when using computer,Top portion of the lens is for looking far. For people who wear multifocal glasses for the first time, it takes a week to get used to it. [PACKING INCLUDES]:2 Packs of blue light blocking mutifocus reading glasses/ A packing cloth bag/ A cleaning cloth/ A glasses case. [REDUCE EYESTRAIN & BETTER SLEEP]: The K KENZHOU glasses could effectively block 90% harmful blue rays and relieve eye from fatigue especially when watching TV and looking at computer. [COMFORTABLE FRAME AND TRANSPARENT LENSES]:The frame of K KENZHOU glasses are made of the composite material with stylish design to keep you look professional and fashionable while working or reading. The resin and super lightweight lenses are with good light transmittance and blue light blocking coatings. [90 DAYS' GUARANTEED]:We offer 90 days of warranty. Any question or problem, please contact us immediately.We will help you to solve until satisfaction. If you do not like it after use, please contact us and we will resend you a ordinary reading glasses for free.