?100% WORRY FREE POST-SALES SERVICE?Every eyewear from YIWAEYE have a 90 days’ money back guarantee and a one-year warranty. If there is any problem, please do not hesitate to contact us, we will be glad to give you a satisfactory solution as soon as possible. ?ULTRA LIGHT QUALITY SLIM FRAME?Good-grade metal eyewear frame with IP plating coating, provide a stylish and sleek look that will never goes out of style; Small readers in super lightweight of 12g/0.026lb(a pair), are very comfortable even for long-term using; Slim-design fashion frame also allow you to look down to read and observe your surroundings easily without taking them on and off continuously. ?STURDY, COMFORTABLE & FLEXIBLE?Ergonomic designed nose pads with anti-allergy silicone materials, which is soft and comfortable to any nose type; Collapsible legs made of high-quality stainless steel, can be folded and stretched easily and smoothly; Elastic and durable spring hinges that make the glasses’ temples suitable to any head type, are resistant to wear and not easy to break off. ?BLUE LIGHT BLOCKING COMPUTER EYEGLASSES?Quality clear resin lenses with anti-blue-ray and anti-UV function, which will prevent 90% harmful blue light and 100% UV400, can alleviate visual fatigue and discomfort caused from long periods of web surfing, gaming, reading, using of phones and TV, or working under fluorescent lights. Enjoy your digital time, no worry about blurred vision and headache, and also have a better sleep. ?EXTREMELY PORTABLE DESIGN FOR TRAVELLING?3 fashionable and utility designed small portable spectacles cases with magnet buckles, thin and mini size as a key chain, which are compact enough to carry out by storing them in purses, wallets or pockets. Convenient set of 3 pairs, is a good choice for seniors to have a pair handy wherever you go and keep a pair in your different favorite reading places.