These gradient-lens Khan shield men's aviators are the modern version of sunglasses that people enjoyed many years ago. They are perfect because they take everything that was great about these sunglasses back then and bring them into the modern day. So many people have gone away from aviators because they feel like their time has passed. Times have changed. All fashion trends that were popular in the past come back with vengeance sooner or later. You have the ability to choose these sunglasses and still have the same effect as what happened when people wore them in the past.