Thirteen Banana
$ 58
A unisex rounded square frame in dark grey, light grey or blue. Light, translucent finish.
- Frame: Plastic
- Colours: Dark Grey, Light Grey, Blue
- Case & microfibre cloth included
- Lenses made in our UK labs
- Delivered across Australia
- Free 30-day returns
About the Top banana Thirteen Banana
Thirteen Banana Prescription Glasses
Not quite round, not quite square, and that is exactly why this shape works on so many faces. The Thirteen Banana is a unisex full-rim plastic rounded square frame in Dark Grey, Light Grey or Blue. You can order it with single vision, progressive or bifocal lenses made to your prescription. It belongs to the Top Banana collection.
Choosing your Thirteen Banana colour
Dark Grey. The Dark Grey version is translucent grey. It is a quiet, professional finish that works with navy, charcoal and white.
Light Grey. The Light Grey version is light grey translucent. It is a great match for cooler skin tones and a crisp, tidy look.
Blue. The Blue version is translucent blue. It reads as smart and dark from a distance, with a little more personality up close.
Still torn? Think about what you wear on an ordinary weekday, not on a night out. That is the colour you will be happiest with.
Design details
The rounded corners and straight lines balance most face shapes, especially oval, square and heart-shaped faces. The translucent finish lets light through, so the frame looks lighter and softer than a solid colour.
The plastic frame is light on the nose and comfortable for all-day wear.
If you want a frame you can put on in the morning and forget about, the Thirteen Banana is a strong choice.
How to wear it
It works with workwear and weekend clothes alike, which is exactly what you want from an everyday frame.
How it fits
| Brand | Top banana |
|---|---|
| Frame | Plastic |
| Colours | Dark Grey, Light Grey, Blue |
| Designed for | Unisex |
With 50mm lenses, this is a compact frame that suits smaller faces.
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 Thirteen Banana
Pick the lenses that match your prescription:
- Single vision: one clear prescription across the whole lens.
- Bifocal: distance on top, a reading segment below.
- Progressive: smooth vision from near to far in one lens, no line.
- Ready readers: off-the-shelf magnification for books and screens.
Prefer to keep things slim? Choose a high-index lens, which is thinner and lighter than standard. Then add an anti-reflective coating to cut glare from headlights and screens.
What you need to order
Have your prescription handy before you start. It will list the sphere, cylinder and axis for each eye, and often your PD as well. If your PD is missing, your optometrist can give it to you. Then simply choose your colour and lens type, enter your prescription and add any extras, such as a thinner lens or a coating. You can review everything in your cart before you pay.
Made for you in our UK lab
Choose your colour and lenses, enter your prescription and PD, and our optical lab in the UK makes your lenses and fits them into your Thirteen Banana before sending them to you in Australia.
Looking after them
Clean the lenses with lens spray and a soft cloth, fold the arms before you put them down, and keep them in a hard case when they are not on your face. Our guide to caring for your lenses covers the rest.
Questions we often get
Is it a small frame?
Yes. With 50mm lenses it suits smaller faces.
Can I use the Thirteen Banana as computer glasses?
Yes. Single vision lenses set to your screen distance, or progressive lenses if you also need distance vision, both work well for desk work.
Is it unisex?
Yes. It suits men and women.
Where are my lenses made?
In our UK optical lab. They are cut to your prescription, fitted into your frame and then sent to you in Australia.
Still deciding on the Thirteen Banana? 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 | Top banana |
|---|---|
| Color | C1-DARK GREY 50×21, C2-LIGHT GREY 50×21, C3-BLUE 50×21 |
| Eye Size | 50 |
| Type | Optical |
| Material | Plastic |
| Wearer | Unisex |
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 Australia: 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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