TR90 is a lightweight, flexible thermoplastic used for everyday eyeglass and sunglass frames. If you want glasses you barely notice on your face, that bend slightly instead of snapping, it is one of the most practical materials to look at. This guide explains what TR90 is, where it shines and where another material may suit you better.
What is TR90?
TR90 is a nylon-based thermoplastic, often described as a "memory" material. The frame can flex and then return to its original shape. It is injection moulded, which means manufacturers can produce thin, light frames with clean lines and a wide range of colours.
You will see it written as TR, TR90 or "Grilamid TR90" in product listings. In practice they all point to the same idea: a frame built to be light and forgiving. Browse the full range in our TR90 collection.
Why people choose TR90 frames
- Low weight: a lighter frame puts less pressure on the nose bridge and behind the ears, which many people notice after a full day of wear.
- Flexibility: temples can bend when you put glasses on one-handed, or when they get tucked into a bag.
- Comfort in warmth: TR90 does not feel cold on the skin and generally sits well in warm weather.
- Colour range: solid blacks, translucent tones and two-colour combinations are all common.
- Active lifestyles: flexible frames are a popular pick for sports, cycling and travel.
TR90 vs acetate vs metal
No material is best for everyone. This table shows how the three most common frame materials compare in everyday use.
| Feature | TR90 | Acetate | Metal |
|---|---|---|---|
| Weight | Very light | Medium, a little heavier | Light to medium |
| Flexibility | High | Moderate | Depends on the alloy |
| Look | Clean, modern, matte or gloss | Rich patterns and depth | Slim, classic |
| Adjustability | Limited | Can be warmed and shaped | Easy to adjust |
For a deeper look at the other two options, see our collections of acetate and metal frames.
Who TR90 suits best
TR90 works well if you wear glasses from morning to night, if you are active, or if you tend to sit on or drop your frames. It is also a sensible choice for children and for anyone who has found heavier frames slide down the nose.
Think twice if you love the glossy, layered look of thick acetate, or if you need a frame that your optician can reshape many times. TR90 holds its shape well, but it does not respond to heat adjustments like acetate does.
Styles to try
TR90 is not limited to sporty shapes. A full-rim rectangle such as the Rayner is a clean, office-friendly option in black with green temples. For sun, the Alva and Peoria sunglasses show how the same material can carry a retro or chunky square design. If you prefer something more playful, look at the Alva colourways.
Fit and care tips
- Check the frame size against a pair you already own using our frame size guide.
- Rinse with lukewarm water and a drop of mild soap, then dry with a microfibre cloth.
- Avoid leaving frames on a car dashboard or near a heater, as high heat can warp thermoplastic.
- Store them in a case rather than loose in a bag.
If you wear a prescription, read how to read a prescription before you pick lenses.
Frequently asked questions
Is TR90 the same as plastic?
TR90 is a plastic, but a high-performance one. It is more flexible and lighter than standard injection plastics and is chosen specifically for eyewear.
Are TR90 frames durable?
They are designed to flex under pressure and return to shape, which makes them resilient in daily use. Like any frame, they last longer when you store them in a case.
Can I put prescription lenses in TR90 frames?
Yes. Choose your frame, then add your prescription in our lens selector, including single vision and progressive lenses.
Are TR90 frames good for sports?
Many people choose them for running, cycling and travel because they are light and bend rather than break under mild impact. See our sports sunglasses.
Find your lightweight frames
Explore the eyeglasses collection or all sunglasses and try TR90 for yourself. Add your prescription in a few clicks with our lens selector.
