FLEXIT 6045
$ 198
A unisex rectangular frame in black or grey.
- Size: 55-18-145 mm, lens depth 35 mm
- Colours: Black, Grey
- Case & microfibre cloth included
- Lenses made in our UK labs
- Delivered across Canada
- Free 30-day returns
About the FLEXIT 6045
FLEXIT 6045 Prescription Glasses
A clean rectangular frame works at the office, at home and everywhere in between. The FLEXIT 6045 is a unisex full-rim metal rectangular frame, sized 55-18-145, in Black or Grey. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It is part of our Flexit collection.
Black or Grey: which one is you?
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.
Grey. Grey is a soft, neutral grey. It is cool, modern and understated, and it suits grey or silver hair especially well.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Design details
Rectangular lenses suit round and oval faces, adding a bit of definition. The slim metal construction keeps it light and neat, and it is easy to adjust at an optical store.
Whether it is your main pair or a spare, the FLEXIT 6045 is easy to live with.
How to wear it
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 | Flexit |
|---|---|
| Colours | Black, Grey |
| Frame size | 55-18-145 mm (lens width, bridge, arm length) |
| Lens depth | 35 mm |
With 55mm lenses, this is a larger frame that suits wider faces. The 18mm bridge is average. The 145mm arms are on the longer side, which suits larger heads. Across the lenses and bridge it measures about 128mm.
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 FLEXIT 6045
Choose the lens type that suits how you use your glasses:
- 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. 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.
What you will need
Have your prescription on hand before you start. It shows the sphere, cylinder and axis for each eye, and sometimes your PD. If the PD is missing, your optometrist 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 cart before you pay.
From our lab to you
Your FLEXIT 6045 is made 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.
Keep them looking new
Clean your lenses with a microfibre cloth rather than your sweater, 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.
FAQs
Can I get varifocal lenses in the FLEXIT 6045?
Yes. The 35mm lens depth gives varifocal lenses enough height for all three vision zones.
Is the FLEXIT 6045 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.
Is it a large frame?
Yes. With 55mm lenses it suits wider faces.
Who makes 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.
Still deciding on the FLEXIT 6045? Browse more 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 | Flexit |
|---|---|
| Bridge Size | 18 |
| Color | Black, C1-GREY |
| Eye Size | 55 |
| Lens Depth | 35 |
| Temple Length | 145 |
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 to Canada: the cost and your estimate are shown at checkout before you pay.
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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