RB4340 Spex4Less.Com

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12 month frame warranty

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Size Need help choosing your size?

Includes Non-Prescription Original Lenses

The right size frames

With thousands of frames to choose from, how do you choose a pair of glasses that will fit correctly? On this page, you'll learn two methods for choosing a great-fitting frame, without having to try them on first. These tips are extremely handy if you are considering purchasing your next pair of glasses on the internet. If you do decide to buy online, it is advisable to choose a supplier that offers an exchange or return service, just in case!

Calculate Your Frame Width

Determining your frame width is crucial for selecting glasses that fit well and look great. It's a simple step that guides you to the ideal eyewear size for optimal comfort and style. Follow these steps for a perfect fit:

Measure the width of one lens to find your eye size. Multiply your eye size by 2.

Measure the width of the bridge (the part over your nose).

Diagram showing bridge width measurement

Add 11mm to account for the frame's arm width from the front.

Example: If your eye size is 50mm and your bridge width is 20mm:

Double Eye Size: 50mm x 2 = 100mm

Add Bridge Width: 100mm + 20mm = 120mm

Add for Arms: 120mm + 11mm = 131mm

Your ideal frame width is 131mm(+ or - 4mm for flexibility).

Our Helpful Sizing Tool

Size	Measurement (mm)
Small	115-135
Medium	130-140
Large	135-145
Extra Large	140-155

Our sizing tool simplifies the process of finding the perfect glasses by categorising them into four sections: Small, Medium, Large, and Extra Large. With just a few clicks, you can find the size that will provide the best fit and comfort. Our tool helps us deliver glasses that fit well and look great, and it's available under the "size" dropdown on our catalogue pages. If you're looking for something more specific, you can adjust the sizing sliders under the "Advanced sizing" option. Find your perfect pair with ease using our sizing tool.

Finding your frame size

When selecting a new pair of glasses, it's important to know your frame size to ensure a comfortable and proper fit. This diagram illustrates where to find the size measurements on your current pair of glasses. Typically, these measurements are located on the inside of the arm and are listed in millimeters. The first number represents the lens width (Eye size), the horizontal diameter of one lens6. The second number is the bridge width, the distance between the two lenses. Lastly, the third number indicates the length of the arm. To find the best fit, compare these measurements to the size specifications of the new glasses you are considering.

The number on the left-hand side of the square box is the "Eye Size" and is sometimes referred to as the "A" measurement. This is the width of the lens at its widest point measured in millimetres (see A in the diagram below).

The number on the right-hand side of the square box is the "Bridge Width" and is sometimes referred to as the "DBL" (distance between lenses). This is the distance between the two lenses measured in millimetres.

You may also find a third, three-digit number. This is the "Arm Length". The arm length is measured in millimetres from the attachment screw to the tip of the arm. The measurement is made before the bend is put into the arm.

Lens Depth

You may have noticed that thus far, we have not mentioned the Lens Depth. This measurement will largely depend on the style of frame you decide upon and in many cases, is not required to identify a good-fitting frame. However, if you are choosing glasses for bifocals or varifocals, be mindful that the shallower the frame is, the less area there will be available for the reading element of your lens.

When purchasing Varifocals we recommend a Lens Depth of at least 27 millimetres. For this reason, at Spex4Less, Varifocal lenses will not be available to purchase on frames with a lens depth of fewer than 27 millimetres.

The right size frames

Calculate Your Frame Width

Measure the width of one lens to find your eye size. Multiply your eye size by 2.

Measure the width of the bridge (the part over your nose).

Add 11mm to account for the frame's arm width from the front.

Example: If your eye size is 50mm and your bridge width is 20mm:

Double Eye Size: 50mm x 2 = 100mm

Add Bridge Width: 100mm + 20mm = 120mm

Add for Arms: 120mm + 11mm = 131mm

Your ideal frame width is 131mm(+ or - 4mm for flexibility).

Our Helpful Sizing Tool

Size	Measurement (mm)
Small	115-135
Medium	130-140
Large	135-145
Extra Large	140-155

Finding your frame size

Lens Depth

Frame Details:

Hinge Type: Hinged

Material: Plastic
Delivery: (Sourced from Italy)
Price:
- Gender: Unisex
- Multifocal:
  Available
  
  Multifocal
  
  This frame is compatible with multifocal lenses, including varifocal, bifocal, and occupational lenses. Multifocal lenses are ideal if you need vision correction at multiple distances, such as for reading, computer work, and seeing far away—all in one pair of glasses.
  
  Choosing multifocal lenses means you can enjoy clear, seamless vision without the need to switch between different pairs of glasses.
  
  Need help deciding? Our opticians can guide you on the best lens option for your lifestyle.
- Frame Type: Full Rimmed
- RRP:
- Nose Pad: Moulded/Plastic
- Frame Shape: Wayfarer
- Brand: Ray-Ban
- SKU:

140 mm

Customer Reviews

4.5

Based on 2 reviews

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Ruth Byng 15-08-2025

The wayfarers were spot on frame wise but it was a bit confusing ordering the lenses, there's no option on your website to order specific Rayban prescription lenses, so when they came they were plain prescription lenses in Rayban frames and also came with loose Rayban coloured sunglass lenses and no instructions as to what they were for, we opted for a different frame in the end with just prescription Rayban sunglass lenses but I had to phone up to order these.

michael vivian-lewis 03-02-2025

very happy with sun glasses i highly recomend you quick turn around second time as a customer will use you againg many many thanks a1

Description

Elevate your everyday look with the RB 4340 Ray-Ban Wayfarer Sunglasses. Constructed from high-quality plastic, these frames promise durability without compromising on comfort. The iconic Wayfarer shape gives a nod to timeless style while exuding a modern edge, making them the perfect accessory for any occasion. Whether you're strolling through the city or lounging on the beach, these sunglasses offer unmatched versatility. The design features of these Ray-Ban sunglasses are both sleek and sophisticated. The distinguishable metallic accents at the hinge add a touch of class, making these frames stand out from the crowd. Craftsmanship is evident in every detail, ensuring that you're not just wearing sunglasses, but a statement piece. Slipping on these Ray-Ban Wayfarers will make you feel effortlessly stylish and confident. The brand's signature logo subtly adorns the temples, a hallmark of quality and prestigious design. Ideal for both casual and formal settings, these sunglasses promise to be a staple in your accessory collection, offering both comfort and unparalleled style.

Delivery & Returns

Non-Prescription Lenses	Standard Lenses	Specialist Lenses

View Full Delivery Schedule

If you're not satisfied with your purchase from Spex4Less, you can request a return or exchange within 7 days for prescription glasses or 14 days for non-prescription items. Items must be returned in their original condition. For more details, visit the Exchanges & Returns page.