Question

In 'sun glasses'which materials are use?​

Answer 1

Answer:

Sunglass lenses are made of either glass, plastic, or SR-91. Plastic lenses are typically made from acrylic, polycarbonate, CR-39 or polyurethane. Glass lenses have the best optical clarity and scratch resistance, but are heavier than plastic lenses.

Answer 2

Answer:

2 glasses are materials