OUR ADVANTAGES OF COMPUTER READING GLASSES: Block Blue Light Protect Eyes Reduce Eyestrain and Enjoy Better Sleep Excellent Material, Flexible and Lightweight comfort to wear Accurate lens and clear vision Vintage Classic Frame Design SPECIFICATION: Diopter available: 1.0/ 1.5/ 2.0/ 2.5/ 3.0/ 3.5 Frame Width :135mm/ 5.3" Frame Height:45mm/ 1.77" Bridge Width :24mm/ 0.98" Temple Length :140mm/ 5.5" PACKING INCLUDES: 4 x Reading Glasses 4 x Eyeglass Pouch 3 x Glasses Ear Grip 1 x Glasses Cloth 1 x Mini screwdriver 1 x Glasses holder CUSTOMER SERVICE If you have any problems with our items or services, please feel free to contact us. We will do our best to solve any problems and provide you with the best customer services. Your Glasses come with our 30 Day Money Back Guarantee and 1-Year Manufacturer's Warranty Thank you.