If technical innovation is what you are looking for in a sunglasses, you should check out Persol sunglasses at EyeSave. It has 100% UV protection which is the most important thing to consider when buying a sunglasses. When my husband bought me a sunglasses as a birthday gift a couple of years ago, I instantly knew that it was a good one. I still use the same sunglasses till this day. It's so nice to be able to find just the right fit for your you.