Specifications Product NameFolding Reading GlassesMaterialTR90ColorBlackProduct SizeTotal Width136mm 5 35 inch Frame Width55mm 2 17 inch Frame Height32mm 1 26 inch Nose Bridge Width21mm 0 83 inch Temples Length137mm 5 39 inch Weight16g 0 56oz Presbyopia Degree and Age Reference TableAge years old Under 5050 5455 5960 6465 6970 75Suitable Degree11 522 533 5Degrees 100 150 200 250 300 350 The above figures are for reference only and may vary depending on the degree of presbyopia of the individual Features 1 Foldable design for easy carrying2 Blue light blocking lenses to protect eyes3 HD lens for clear vision4 Stylish TR optical frame5 Available in different diopters Package includes 1 x Folding Reading Glasses 1 x Zipper CaseNote 1 There is a 2 3 difference according to manual measurement Please check the size carefully before you buy the item 2 Please note that a slight color difference should be acceptable due to the light and the screen