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RB 4640

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Product Details

Model Code:

Model Code:0RB4640 644971 50

Use this square-shaped frames to complete your look and take it for a walk to turn heads. This frame is a new model with the same unisex fit and form adored by trend-setters everywhere. Available in many colours, from Yellow Light Havana for sunny dispositions to all-black frames on incognito days, combined with classic and gradient lenses, this model meets bold shades in thick and square frames to brave the elements and trends to come.

SKU: 0RB4640-644971-Grey

FRAME DESCRIPTION

Shape Square
Frame Color Grey
Temple Color Grey
Material Nylon
Hinge 130
Front Color Family Grey
Front Color Finish Polished
Front Color Treatment Transparent
Temple Color Description Transparent Grey
Temple Color Grey
Temple Color Treatment Transparent

LENS INFORMATION

Lens Grey Gradient
Lens Color Light Grey Gradient Dark Grey
Lens Treatment Full coating
Lens Material Glass
Lens Color Light Grey Gradient Dark Grey
Lens Width 49.5 mm
Lens Height 38.7 mm
Lens Diagonal 53.4 mm
Polarized No
Photochromic No
Color Level Dark
Mirror Treatment Absent
Mirror Treatment Color Absent
Anti Reflective Treatment Type Full Coating
Anti Reflective Treatment Color Blue
Gradient Yes

PRODUCT DIMENSIONS

Hinge to hinge
Bridge Width 20 mm
Temple Length 150 mm
Bridge Size 20 mm
Lens Height 38.7 mm

FITTING

Nosepads Plastic Standard
Bridge Type Single
Bridge Design Standard

Included in your order

RB 4640

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Size Guide

Face Guide

SIZE GUIDE

HOW DO I FIND THE FRAME SIZE OF MY RAY-BAN SUNGLASSES AND EYEGLASSES?

This guide explains how to choose the right sunglasses or eyeglasses size by either the measure of the lens or by looking at your current shades.*

*This guide is efficient for Ray-Ban Aviator sizes, Ray-Ban Wayfarer sizes, Ray-Ban Clubmaster sizes and all Ray-Ban models.

Important note: for the great majority of people, more then 90% of our customers, Standard Size is the correct one. It’s very likely it’s going to be the correct size for you too.

If this is your first pair of Ray-Ban, a rule of thumb to determine the correct size for you is the following.

FIND YOUR FIT:

WHAT ARE THE NUMBERS ON MY EYEGLASSES AND SUNGLASSES FRAME?

If you have an old pair of Ray-Ban and you want to know what the numbers printed inside the temples mean, here you will find an explanation.

The measurements need not be exact, they change from model to model, but the closer they are to those of your old glasses, the more the new ones will look similar on your face.

TEMPLE

Most of our sunglasses and eyeglasses have the size measurement printed on the inside of the left temple (the piece that goes behind your ear). This usually consists of three numbers - sometimes only the first two are printed - similar to this: 50 20 150.

The third number in the sequence represents the temple length, it is the measurement in millimeters of the 'arms' of the frame.

LENSES

The width of the lens is the first number in (50-20-150). The front measurement includes the diameter of the lens and the width of the bridge measured in millimeters and usually separated by a small dash or rectangle (e.g.: 50 - 20).

The lens diameter is the width of the lens, measured from the bridge, and the width of the bridge is the distance between the lenses above the nose, as shown in the figure below. Sometimes, the vertical measurement of the lens and the length of the arms are also present.

BRIDGE

Bridge width is the second number in (50-20-150). Typical widths are 12-26 millimeters. The bridge measurement is the distance between the lenses.

NEED HELP?

If you need help choosing your perfect sunglasses or eyeglasses, please contact us, we'd love to help you choose the best fit and the right style. Don't forget we offer free shipping and free returns , so you can buy at ray-ban.com hassle free.

Browse our selection of men's and women's eyeglasses and men's and women's sunglasses.

Shop Sunglasses > Shop Eyeglasses >

Size Guide

CHOOSE THE PERFECT FRAME

Eyeglasses can change your appearance and Ray-Ban has a lot of eyewear styles to choose from. Not sure which style is best for you?

Here you’ll find some tips to point you in the right direction, helping you find the best frame for your face and overall style.

To start, have a look at the Ray-Ban Collection and all of its features including shapes, colors and styles.

CHOOSE THE SHAPE OF YOUR FACE

There are two main groups of face shapes: Rounded e Angular.

As a general rule: For balance and proportions, frame shape should be in contrast with the face shape: choose angular shapes for rounded faces, and rounded shapes for angular faces.