Solo 621
£ 39
A unisex oval frame in dark purple or red. Clear crystal finish.
- Size: 52-13-135 mm, lens depth 35 mm
- Colours: Dark Purple, Red
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Solo 621
Solo 621 Prescription Glasses
An oval frame softens strong features and keeps the look light. The Solo 621 is a unisex full-rim oval frame, sized 52-13-135, in Dark Purple or Red. You can order it with single vision, varifocal or bifocal lenses made to your prescription. You will find it in our Solo range.
Choosing your Solo 621 colour
Dark Purple. In Dark Purple, the frame is purple and crystal. It adds a confident touch of colour and suits fair and cool skin tones.
Red. Red is a confident red. It looks great with neutral outfits and a bold lip.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
The details
Oval lenses balance square and heart-shaped faces and keep the overall look soft. The crystal finish is clear and fresh, and it lets your features take centre stage.
Whether it is your main pair or a spare, the Solo 621 is easy to live with.
Wearing it every day
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.
Frame size and fit
| Brand | Solo |
|---|---|
| Colours | Dark Purple, Red |
| Frame size | 52-13-135 mm (lens width, bridge, arm length) |
| Lens depth | 35 mm |
The 52mm lenses make this a medium frame that suits most faces. The 13mm bridge is narrow, so it sits securely on a slimmer nose. The 135mm arms are a standard length. Across the lenses and bridge it measures about 117mm.
The easiest way to check is against glasses you already love. Most frames show their size inside the arm; if yours are close to these, you are in safe territory.
Lens options for the Solo 621
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 35mm lens depth works with single vision, bifocal and many varifocal lenses. 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.
Ordering online is simple
You need a valid prescription from your optician and your pupillary distance (PD), the distance between your pupils. Many opticians include your PD on the prescription; if yours does not, just ask for it. Choose your colour, pick your lens type, enter your details and add any lens upgrades. If you are unsure about size, compare the measurements above with a pair you already wear.
How your glasses are made
Your Solo 621 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
Use lens spray and a soft cloth, fold the arms before putting your glasses down, and store them in a hard case. Our guide to looking after your lenses covers the rest.
Questions we often get
Can I get varifocal lenses in the Solo 621?
Yes. The 35mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I wear the Solo 621 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 52-13-135: 52mm lens width, 13mm bridge and 135mm arms, a medium fit.
Will it suit a narrow nose?
Yes. The 13mm bridge is designed for slimmer noses.
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 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 | 13 |
| Color | Dark Purple, Red |
| Eye Size | 52 |
| Lens Depth | 35 |
| Temple Length | 135 |
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

Solo 619
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Solo 622
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Solo 618
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy
Solo 623
£ 39+ Single Vision with MAR Coat & FREE Delivery
Customise & Buy

