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Wide forehead and cheekbones, tapering towards the chin.
Oval face shape:
Cheekbones are slightly wider than the chin and forehead.
Triangle face shape:
Wide jawline, medium set cheekbones and narrow forehead.
Lens Material:
Polycarbonate
Lens Color:
Grey Gradient Blue
Base Curve:
4.00
UV Protection:
Category 2
General purpose sunglasses
High protection against sunglare
Good UV protection
Not suitable for driving in twilight or at night
Not for direct observation of the sun
Not for protection against artificial light sources, e.g. solaria
Not for use as eye protection against mechanical impact hazards
Prescription Details
Lens Compatibility:
Types of lenses which can be added to this frame choice.
Progressive, Reading, Distance, Fashion, Computer
Prescription Range:
This frame is suitable if your sphere (SPH) and cylinder (CYL) values fall within this range.
SPH: -8.00 to +7.00
CYL: -4.00 to +4.00
Progressive Compatibility:
Progressive lenses are a type of multifocal lens, with three different prescriptions in each lens. They give you clear, seamless vision at near, intermediate, and far distances. Some frames are not suited to progressive lenses.
No
Yes
Not Recommended
PD Range:
Pupillary distance (PD) is the distance between the centers of your pupils. This is a vital measurement needed for us to prepare your prescription eyewear accurately. The average adult’s PD is 54 to 74 mm; for kids it's 43 to 58 mm.
59 to 83 mm
Details
Polycarbonate: Polycarbonate is lightweight| comfortable| impact resistant| and provides UV protection.
These Ray-Ban RB4840S sunglasses are the ideal choice for any sunny day. The versatile Ray-Ban RB4840S 60174L sunglasses really give that finish to anything you wear. The durable PEEK Polyether Ether Ketone ensures that your sunglasses stay with you year after year as well as always remaining comfortable. At SmartBuyGlasses , most of our sunglasses can be fit with your prescription, offering you superior vision and protection.
Check the measurements inside your current frame for the best match.
Your glasses don’t need to match measurements exactly, use our size ranges to find the best fit.
134 mm
44 mm
52 mm
21 mm
Bridge Width
Temple Length
Lens Width
145 mm
Lens Width
Bridge Width
Temple Length
Extra-Small
Below 42 mm
Below 16 mm
Below 130 mm
Small
42-49 mm
16-18 mm
130-135 mm
Medium
50-54 mm
19-20 mm
136-145 mm
Large
55-58 mm
21-23 mm
146-150 mm
Extra-Large
Above 58 mm
Above 23 mm
Above 150 mm
* This is a general size guide reference. Depending on the style of the frame or brand you choose, some variance may occur.
If you don’t wear glasses
You only need a ruler and a mirror. All measurements are in millimeters (mm).
Frame widthMeasure across your face from one side of your forehead to the other, just above your eyebrows.This helps ensure the frame fits comfortably without squeezing or slipping.
Bridge WidthMeasure the width of your nose at the narrowest point between your eyes.A proper bridge fit prevents pressure or sliding.
Temple LengthMeasure from the side of your face to just behind your ear, following the natural curve of your head.This ensures the arms of the glasses sit comfortably and securely.
100-Day ReturnsReturn within 100 days if the fit isn’t perfect.Learn more
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