FEATURES Frame Material: Metal Diopter available: +0.0/+0.5/+1.0/+1.25/+1.5/+1.75/+2.0/+2.5/+3.0/+3.5 Lens width: 2 1/8"(53mm) Frame width: 5 1/8"(130mm) Lens height: 1 11/16"(43mm) Bridge(DBL): 11/16"(18mm) Temple length: 5 5/16"(135mm) Spring hinge: No Lenses: Aspheric Head size: Medium to Wide CARE To avoid damage, never clean your eyeglasses with paper towels or clothing or alcohol, and also avoid using household detergents or soaps. While a few mild soaps don't harm lenses, today's extra strength soaps are powerful enough to slowly disintegrate lens coatings. KINDLY NOTICE Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Please ensure that the FRAME SIZE is fit for your head before your pay.

[Kindly Notice] If you cannot make sure which magnification strength to choose, please use the EYE TEXT CHART we provide on the left. Please specify magnification strength before your pay. Thanks!. ENJOY BETTER SLEEP - The screens we look at every day emit blue light which causes headaches, insomnia, eye strain, and make it harder to fall asleep and stay asleep.With our computer glasses, no more eye fatigue, blurred vision and headache during your computer screen time. Better sleep for you, blue light blocker is there for your eyes and guardian for your exquisite life. REDUCE EYESTRAIN - Get rid of tired eyes, eye strain, headaches and migraines as well as protecting your eyes from long term damage. BLUE LIGHT BLOCKING GLASSES - CessBlu Blue light Blocking Glasses could protect your eyes from harmful blue light when you are using electronic device, such as monitor, tablet, cell phone, etc. CessBlu Blue light Blocking Glasses can cut more than 60% harmful blue light. It helps you work and live in a more healthy way. PRODUCTS DIMENSION - Lens width about 2 1/8 inches (53mm), Frame width about 5 1/8 inches (130mm), Lens height about 1 11/16 inches (43mm), Bridge (DBL) about 11/16 inch (18mm), Temple length about 5 5/16 inches (135mm), without spring hinge.[Kindly Notice] In the first picture, the color of the temple is visually affected by the lenses. The real color is shown in the SECOND PICTURE.