Unbreakable reading glasses are also called durable glasses. They are made of durable frames like titanium and impact resistant lenses like PC lenses. As the name implies, the advantages of unbreakable reading glasses over regular one are more durable, bendable and flexible.
Unbreakable reading glasses are also called bendable reading glasses. They are made of durable materials, such as memory metal and memory plastic frames. These unbreakable reading eyeglasses are extremely durable and flexible. They can restore to their original shapes after bending.