The question I get asked most often as I tour around opticians is "Why do you make your frames from acrylic?"
Well there are plenty of reasons but the main ones are:
1) It is incredibly light weight and comfortable to wear
2) Once adjusted it keeps its shape so it stays comfortable - which is why there is no
re-enforcing wire in the temple. See the vid above
3) We can achieve a unique palette of colours that you will not find anywhere else in optics