D240
£ 79
A unisex rectangular frame in black, blue or gun. Semi-rimless with an open lower edge.
- Size: 54-17-140 mm, lens depth 36 mm
- Colours: Black, Blue, Gun
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Brooklyn D240
D240 Prescription Glasses
Rectangular frames are the dependable all-rounders of eyewear. The D240 is a unisex full-rim metal rectangular frame, sized 54-17-140, in Black, Blue or Gun. You can order it with single vision, varifocal or bifocal lenses made to your prescription. You will find it in our Brooklyn collection.
3 colours to choose from
Black. Black is a deep, solid black. Black suits every hair colour and frames the face with confidence.
Blue. Blue is a clear, easy-to-wear blue. It brings a cool, calm touch of colour that suits most skin tones.
Gun. In Gun, the frame is gunmetal. It is a quiet, professional finish that works with navy, charcoal and white.
If you are stuck between two, choose the one closest to the colours you wear most. You can always add a second pair later.
Shape and style
Rectangular lenses suit round and oval faces, adding a bit of definition. The frame runs along the top of the lenses only, so the lower edge is open and your view stays clear.
Metal lets the frame stay slim and light while keeping its shape.
The D240 is a great everyday frame: smart enough for work and relaxed enough for the weekend.
Styling tips
Keep the rest of your look simple and let the frame do the talking. It works just as well with workwear as it does with weekend clothes.
Size and fit
| Brand | Brooklyn |
|---|---|
| Colours | Black, Blue, Gun |
| Frame size | 54-17-140 mm (lens width, bridge, arm length) |
| Lens depth | 36 mm |
The 54mm lenses put it at the upper end of medium. The 17mm bridge is average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 125mm.
To check the fit, look at the three numbers printed inside the arm of glasses you already own. If they are within two or three millimetres, this frame should feel similar.
Lens options for the D240
Your optician’s prescription will usually tell you which of these you need:
- Single vision: one prescription across the whole lens, for distance, reading or the computer.
- Varifocal: near, intermediate and distance in one lens, with no visible line.
- Bifocal: a separate reading segment in the lower part of the lens.
- Ready readers: simple magnification if you just need help with close work.
The 36mm lens depth works with single vision, bifocal and many varifocal lenses. Want lighter lenses? A high-index lens is thinner than standard plastic. Pair it with an anti-reflective coating for less glare when you drive after dark.
Before you order
Make sure your prescription is in date; most adults in the UK are advised to have an eye test every two years, and your optician will tell you if you need one sooner. You will also need your PD, which tells our lab where to centre the lenses. With those two things ready, ordering takes a few minutes: choose your colour, pick your lenses, enter your details and you are done.
From our lab to you
Pick your colour and lenses, add your prescription and PD, and our UK lab cuts your lenses and fits them into your D240. Every pair is checked before it leaves us.
A little care goes a long way
Rinse off any grit before you wipe, dry the lenses with a clean microfibre cloth, and take your glasses off with both hands so the arms stay aligned. See our lens care guide for more.
FAQs
Can I get varifocal lenses in the D240?
Yes. The 36mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I wear the D240 for driving?
Yes. Single vision or varifocal lenses work well for driving, and an anti-reflective coating helps cut glare from headlights at night.
What size is it?
It is size 54-17-140: 54mm lens width, 17mm bridge and 140mm arms, a medium fit.
What does semi-rimless mean?
The frame runs along the top of the lenses only. The lower edge is held by a fine line, so the bottom of the lens is open.
Where are my lenses made?
In our UK optical lab. They are cut to your prescription, fitted into your frame and checked before they are sent out.
Still deciding on the D240? Browse more prescription glasses.
Lens prices
Lens types
| Lenses | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.5 Index (standard) | FREE | ÂŁ40 | ÂŁ69 |
| Transitions | ÂŁ50 | ÂŁ90 | ÂŁ119 |
| Sunglasses tint | ÂŁ10 | ÂŁ50 | ÂŁ75 |
| Blue light filter | ÂŁ30 | ÂŁ70 | ÂŁ99 |
Basic 1.5 Single Vision lenses with anti-reflection coating are included in the frame price.
Thinner lens upgrades
| Lens index | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.6 + HMC | ÂŁ30 | ÂŁ70 | ÂŁ95 |
| 1.67 + HMC | ÂŁ50 | ÂŁ90 | ÂŁ119 |
| 1.74 + HMC | ÂŁ70 | – | ÂŁ135 |
Higher index lenses are thinner and lighter, and are worth it for stronger prescriptions. All include an HMC coating.
Frame details & size guide
Specifications
| Brand | Brooklyn |
|---|---|
| Bridge Size | 17 |
| Color | Black, Blue, C2-GUN 49Ă—17 |
| Eye Size | 54 |
| Lens Depth | 36 |
| Temple Length | 140 |
How to read frame sizes
The three numbers (for example 48-20-140) are the lens width, the bridge and the arm length in millimetres. Compare them with a pair you already own.

Delivery, returns & what is included
Delivery
- Single Vision: 5-7 working days
- Bifocal: 7-10 working days
- Varifocal: 7-10 working days
- Dispatched within 48 hours by tracked Royal Mail service
Delivery is free. Your estimate for your country is shown at checkout.
Returns & exchanges
Free 30-day returns or exchanges. If your glasses are not right for you, we will make it right.
What is included
- Anti-reflection lenses included
- Case and microfibre cloth
- Lenses made in our UK optical lab
- All frames CE marked
- Worldwide delivery
You may also like

Brooklyn D239
£ 79+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Brooklyn D241
£ 79+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Brooklyn D238
£ 79+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Brooklyn D237
£ 79+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy

