scratch resistant hard-coating:
superior scratch resistant coating allows
the lens to last longer and protects your
investment. The coating is fully compatible
with all kinds of multi-coating process.
2.Regular tint hard-coating:
The lens can be tinted up to 50% which is
a good choice for those people who likes
3.Fast tint hard-coating:
The lens can be tinted up to 70% within
20 minutes. The combination of prescription
and sunglasses benefits is the best choice
of your outdoor activities.