Colt 3549
£ 104 Original price was: £ 104.£ 79Current price is: £ 79.
A men’s rectangular frame in black or gunmetal.
- Size: 54-18-145 mm, lens depth 39 mm
- Frame: Full Rim, Titanium
- Colours: Black, Gunmetal
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Colt 3549
Colt 3549 Prescription Glasses
Rectangular frames are the dependable all-rounders of eyewear. The Colt 3549 is a men’s full-rim titanium rectangular frame, sized 54-18-145, in Black or Gunmetal. You can order it with single vision, varifocal or bifocal lenses made to your prescription. You will find it in our Colt range.
Choosing your Colt 3549 colour
Black. Black is a deep, solid black. It defines the eyes and goes with every outfit you own.
Gunmetal. Gunmetal is a dark, smoky grey metal. It is a great match for cooler skin tones and a crisp, tidy look.
Each colour is shown in the gallery, so you can compare them side by side before you decide.
Why you will like it
Rectangular lenses suit round and oval faces, adding a bit of definition. Titanium is one of the lightest frame materials around, which makes it a great choice for all-day wear.
If you want a frame you can put on in the morning and forget about, the Colt 3549 is a strong choice.
How to wear it
Choose the darker colour for the office and the lighter one for a more relaxed look. Either way, it is an easy frame to wear every day.
Size and fit
| Brand | Colt |
|---|---|
| Frame | Full Rim, Titanium |
| Colours | Black, Gunmetal |
| Frame size | 54-18-145 mm (lens width, bridge, arm length) |
| Lens depth | 39 mm |
| Designed for | Men |
The 54mm lenses put it at the upper end of medium. 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 126mm.
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 Colt 3549
Your optician’s prescription will usually tell you which of these you need:
- Varifocals if you want to see near and far without swapping glasses.
- Single vision for one task done well, such as driving, reading or screen work.
- Bifocals if you prefer a clearly defined reading area.
- Ready readers for straightforward close-up help.
The 39mm lens depth gives varifocal lenses plenty of room. 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. Spend a lot of time on screens? This frame is also part of our blue light glasses range.
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.
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 Colt 3549. Every pair is checked before it leaves us.
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 Colt 3549?
Yes. The 39mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I wear the Colt 3549 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 54-18-145: 54mm lens width, 18mm bridge and 145mm 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.
Still deciding on the Colt 3549? Browse more men’s glasses and 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
| Color | Black, Gunmetal |
|---|---|
| Eye Size | 54 |
| Brand | Colt |
| Lens Depth | 39 |
| Temple Length | 145 |
| Bridge Size | 18 |
| Type | Optical |
| Material | Titanium |
| Wearer | Men |
| Rim | Full Rim |
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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