7eye made the Mistral Sunglasses large lenses and an air dam to cover up your thrashed eyes and hide the fact that you were out partying until 4:00am last night. 24:7 lenses darken and fade in a hurry, and they keep on changing after other brands' photochromic films stop working. 24:7 lenses in NXTAA are also virtually shatterproof, with a lifetime warranty. Thanks to the burly frame design and wide temples, these sunglasses lived through the night, and the arm pads kept these shades in place even when you decided that your friend's living room was a dance club.