What is prescription lenses insert?
The insert frame is for people who have eye condition (short-sighted, far-sighted .etc..) to be able to add a prescription lens inside instead of wearing contact lenses. It's useful for people who want to use sunglasses when controlling a vehicle (bike, motorcycle or even car).
This is a solution for people who wear prescription glasses but also have the need for sunglasses. Research has shown that a lot of people don't wear sunglasses because they don't own a prescription one.
Personal Tip: Even if you currently don't have any eyes condition, it should also be a good reason to consider a sunglasses that support prescription because of eye condition are likely to develop over time when your age become higher.
How does it work?
Maintenance and care:
Do not use alcohol or any other chemicals to clean the lens, to avoid surface broken. Do not maintain the sunglasses in extreme environments like high temperature or long time damp, to avoid deformation.
The lens of RockBros Sports Sunglasses is made from durable polycarbonate so only simple cleaning by water is suggested to maintain good quality and extend the lifetime.