TR90 Frames

TR-90 is a Swiss-developed "memory plastic" known for its incredible flexibility.

Best For: Active lifestyles, sports, children, and people who accidentally sit on their glasses

Pros:

• Flexibility: It can bend significantly and "snap back" to its original shape
• Lightweight: Roughly 40–50% lighter than acetate.
• Durability: Highly resistant to extreme heat and cold.

Cons: Can have a "plasticky" or cheaper feel compared to acetate. It is difficult to adjust; if they don't fit perfectly out of the box, an optician may have trouble bending them to stay in a new position.