Design Blue Light Blocking Sleep-nighttime Eyeglasses 4-DSS080 Unmagnified Blue Light Glasses Flex Combinations - The range

Flex Combinations - The range of lens strength combinations are from 0 strength (plano) to 4

Lens width about 2 1/16 inches(53mm)

Lens height about 1 1/16 inches (27mm)

these customizable reading glasses allow you to select different lens powers for your left and right eye

Design Blue Light Blocking Sleep-nighttime Eyeglasses 4-DSS080 Unmagnified Blue Light Glasses Flex Combinations - The rangeDIMENSIONS: Overall Width: 5 5 16 inches (135mm) Temple Length: 5 5 16 inches (135mm) Lens Width: 2 3 8 inches (61mm) Lens Height: 1 7 16 inches (36mm) Frame Height: 1 5 8 inches (41mm) Nose Bridge Width: 3 8 inches (10mm) Spring Hinges: No Lenses: Acrylic Head Size: Medium to Wider. Rx able frame ABOUT US Designer Inspired Frame Comfortable Frame Excellent Durability and Craftsmanship CARE To avoid damage, never contact with acid, and avoid using