Caravelli 231
£ 39
A men’s rectangular frame in black, blue/tort or crystal/black. Clear crystal finish.
- Frame: Full Rim, Metal
- Colours: Black, Blue/Tort, Crystal/Black
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Caravelli 231
Caravelli 231 Prescription Glasses
Rectangular glasses add a little structure to the face without any fuss. The Caravelli 231 is a men’s full-rim metal rectangular frame in Black, Blue/Tort or Crystal/Black. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It belongs to the Caravelli range.
3 colours to choose from
Black. Black is a deep, solid black. It is the safest choice if you only want one pair, and it never looks out of place.
Blue/Tort. Blue/Tort pairs blue with tort. It is softer than black and suits brown, auburn and red hair.
Crystal/Black. Crystal/Black mixes crystal and black. It is the safest choice if you only want one pair, and it never looks out of place.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Shape and style
Rectangular lenses suit round and oval faces, adding a bit of definition. A crystal front looks modern and light, and it goes with everything.
The tortoiseshell arms pair nicely with the front and give the frame a relaxed feel. Metal lets the frame stay slim and light while keeping its shape.
Whether it is your main pair or a spare, the Caravelli 231 is easy to live with. The Caravelli 231 also makes a handy spare pair for the car or the office.
Wearing it every day
It looks sharp with a collared shirt and works just as well with a T-shirt. If you have a beard, a slightly bolder frame balances the face nicely.
How it fits
| Brand | Caravelli |
|---|---|
| Frame | Full Rim, Metal |
| Colours | Black, Blue/Tort, Crystal/Black |
| Designed for | Men |
At 50mm per lens, it is on the smaller side, which is ideal if most frames feel too wide.
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 Caravelli 231
Your optician’s prescription will usually tell you which of these you need:
- Single vision: the same prescription from edge to edge.
- Bifocal: distance at the top and a reading segment at the bottom.
- Varifocal: a smooth change from distance to reading, with no line.
- Ready readers: a fixed magnification for books, phones and screens.
If your prescription is high, a high-index lens keeps things thin. An anti-reflective, scratch-resistant coating is a sensible extra for everyday wear.
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
Your Caravelli 231 is glazed in our UK-based lab. Once you have chosen your lenses and entered your prescription, we cut and fit the lenses and check the finished glasses before they go out.
A little care goes a long way
Clean your lenses with a microfibre cloth rather than your jumper, keep them in their case when they are in your bag, and do not leave them on a sunny car dashboard. Our lens care guide has more tips.
Questions we often get
Is it a small frame?
Yes. With 50mm lenses it suits smaller faces.
Can I use the Caravelli 231 as computer glasses?
Yes. Single vision lenses set to your screen distance, or varifocals if you also need distance vision, both work well for desk work.
What does crystal mean?
A clear, see-through finish.
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.
Want to compare? See more men’s glasses and prescription glasses.
Lens prices
Lens types
| Lenses | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.5 Index (standard) | FREE | £40 | £69 |
| Transitions | £50 | £90 | £119 |
| Sunglasses tint | £10 | £50 | £75 |
| Blue light filter | £30 | £70 | £99 |
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 | £30 | £70 | £95 |
| 1.67 + HMC | £50 | £90 | £119 |
| 1.74 + HMC | £70 | – | £135 |
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 | Caravelli |
|---|---|
| Color | C1-BLACK 50×21, C2-BLUE/TORT 50×21, C3-CRYSTAL/BLACK 50×21 |
| Eye Size | 50 |
| Type | Optical |
| Material | Metal |
| Rim | Full Rim |
| Wearer | Men |
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
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