ANTI BLUE LIGHT READING GLASSES:Blue light blocker,100% UV400 protection,effectively resist 100% harmful blue rays.Anti glare;Reduce eye fatigue,minimize headache when you use digital products(TV/Phone/Ipad/LED Light/Computer/...),DONGDI blue light glasses provide all-day protection,you can enjoy better sleep and digital time. | NEWEST EXPLOSION PROOF POLYCARBONATE LENS:Anti Reflective transparent lens,no color difference,restore the true color,give you a clear vision and bring the best reading experience.Water proof let you can more convenient use in life.Our lenses won't broken easily like others,spend same price that you can use longer. | ADJUSTABLE SPRING HINGE DESIGN:Fashion eyewear with spring hinges,the temples can open up to 25°outwards,durable and not easily damaged.No matter you are large,small or medium face,the adjustable spring hinges design can find the perfect fit for different face shapes to reduce press on temples and offer comfortable feeling. | LIGHTWEIGHT AND STYLISH READERS:Dongdi glasses use ergonomic design,one-piece nose pads,suitable for all kinds of nose type.You can barely feel its presence on your nose.No indentation in your nose,wearing for a long time will not feel oppressive or uncomfortable. | （LIFETIME WARRANTY ,60 DAYS MONEY BACK,）-100% risk free to try any broken problem happens; just contact the seller without any hesitation to solve the problem until you are satisfied.You have no risk to try!