Material: A unique polymer material (Nylon TR-90) 

The Benefit:

1. Superior chemical resistance, can be compatible with the most common Acetate frame.
2. Low weight.
3. Scratch and impact resistance.
4. Cracking or Crazing resistance, suitable for drilling or profile for a variety of Rimless style and metal frame.
5. Optically superior.
6. 100% UV protection.
7. Provides the widest range of shapes (Toric, Decentered, Mask etc.)
8. Be able to compatible with all Hong Tai’s Optical coating.