Retro Sun 021
£ 94 Original price was: £ 94.£ 69Current price is: £ 69.
Unisex browline sunglasses in black/silver.
- Size: 52-18-140 mm
- Frame: Semi-rimless
- Colours: Black/Silver
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Retro Collection Retro Sun 021
Retro Sun 021 Prescription Sunglasses
If you wear glasses, prescription sunglasses are the easiest upgrade you can make. The Retro Sun 021 is a pair of unisex browline sunglasses, sized 52-18-140, in Black/Silver. It can be made with your prescription, so you can see clearly and keep the sun out at the same time. You will find it in our Retro Collection.
The colour
Black/Silver. Black/Silver pairs black with silver. It is the safest choice if you only want one pair, and it never looks out of place.
Why you will like it
The stronger top line suits round, oval and heart-shaped faces, and it can make you look more awake.
The Retro Sun 021 is an easy everyday pair of prescription sunglasses for driving, walking and weekends outdoors.
Styling tips
Keep a pair in the car and another in your bag and you will never squint at the glare again.
How it fits
| Brand | Retro Collection |
|---|---|
| Frame | Semi-rimless |
| Colours | Black/Silver |
| Frame size | 52-18-140 mm (lens width, bridge, arm length) |
| Lens depth | 38 mm |
| Effective diameter | 52 mm |
The 52mm lenses make this a medium frame that suits most faces. The 18mm bridge is average. The 140mm arms are a standard length. Across the lenses and bridge it measures about 122mm.
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.
Prescription lenses for the Retro Sun 021
The Retro Sun 021 can be made with any of these lens types:
- 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.
The 38mm lens depth gives varifocal lenses plenty of room. 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.
Made for you in our UK lab
Pick your colour and lenses, add your prescription and PD, and our UK lab cuts your lenses and fits them into your Retro Sun 021. 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.
Your questions, answered
Can I get the Retro Sun 021 with my prescription?
Yes. Choose single vision, varifocal, bifocal or ready reader lenses when you order.
Can I get varifocal lenses in the Retro Sun 021?
Yes. The 38mm lens depth gives varifocal lenses enough height for all three vision zones.
What size is it?
It is size 52-18-140: 52mm lens width, 18mm bridge and 140mm arms, a medium fit.
What is a browline frame?
A frame with a stronger top section that follows your eyebrows and a finer lower rim.
Who glazes my lenses?
Our own optical lab in the UK. Your lenses are made to your prescription and fitted into the frame before your glasses are sent to you.
Want to compare? See more prescription sunglasses.
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
| Color | Black/Silver |
|---|---|
| Brand | Retro Collection |
| Bridge Size | 18 |
| Eye Size | 52 |
| Effective Diameter | 52 |
| Temple Length | 140 |
| Lens Height | 38 |
| Type | Sunglasses |
| Rim | Supra |
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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