Solo 821
£ 39
A unisex soft square frame in black, blue, dark purple, green or wine. Patterned finish.
- Size: 53-17-140 mm, lens depth 34 mm
- Colours: Black, Blue, Dark Purple, Green, Wine
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Solo 821
Solo 821 Prescription Glasses
If you like structure but not sharp angles, a soft square is the sweet spot. The Solo 821 is a unisex full-rim soft square frame, sized 53-17-140, in Black, Blue, Dark Purple, Green or Wine. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It is part of our Solo collection.
5 colours to choose from
Black. Black is a deep, solid black. Black suits every hair colour and frames the face with confidence.
Blue. In Blue, the frame is patterned blue. It is a fresh alternative to black that still looks professional.
Dark Purple. The Dark Purple version is patterned purple. It brings a little personality without overpowering your features.
Green. The Green version is patterned green. It feels fresh and a little bit different, which is exactly why people notice it.
Wine. The Wine version is patterned wine. It adds warmth without being too bright, and it suits most skin tones.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Why you will like it
The softened corners suit round, oval and heart-shaped faces, adding a little shape without looking severe. A patterned front adds personality while still being easy to wear.
The Solo 821 is a great everyday frame: smart enough for work and relaxed enough for the weekend.
Wearing it every day
Choose the colour closest to what you wear most and it will go with almost everything.
How it fits
| Brand | Solo |
|---|---|
| Colours | Black, Blue, Dark Purple, Green, Wine |
| Frame size | 53-17-140 mm (lens width, bridge, arm length) |
| Lens depth | 34 mm |
At 53mm per lens, it sits in the medium range, the most common adult fit. The 17mm bridge is average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 123mm.
Not sure about sizing? Compare these numbers with the ones on the inside arm of a pair that fits you well. A difference of two or three millimetres or less usually means a similar fit.
Lens options for the Solo 821
Pick the lenses that match your prescription:
- 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 34mm lens depth is on the slim side, so single vision or bifocal lenses usually work best. With a stronger prescription, a thinner high-index lens keeps the edges slim, and an anti-reflective coating cuts reflections from screens and street lights.
What you will need
Have your prescription to hand before you start. It shows the sphere, cylinder and axis for each eye, and sometimes your PD. If the PD is missing, your optician can give it to you. Then choose your colour and lens type, enter your prescription and add any extras, such as thinner lenses or a coating. You can check everything in your basket before you pay.
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 Solo 821. Every pair is checked before it leaves us.
Keep them looking new
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.
Your questions, answered
Is the Solo 821 suitable for varifocals?
The 34mm lens depth is fairly shallow, so single vision or bifocal lenses usually work better.
Is the Solo 821 comfortable for all-day wear?
Yes. It is a lightweight frame, and a thinner lens for a stronger prescription keeps the weight down even further.
What size is it?
It is size 53-17-140: 53mm lens width, 17mm bridge and 140mm arms, a medium fit.
Do you make the lenses yourselves?
Yes. Every pair is made to order in our UK optical lab, where your lenses are cut to your prescription and fitted into your frame.
Not quite the one? Take a look at our 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 | Solo |
|---|---|
| Bridge Size | 17 |
| Color | Black, Blue, Dark Purple, Green, Wine |
| Eye Size | 53 |
| Lens Depth | 34 |
| 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
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