At Notch we make the world's greatest and most innovative hats and we set out to make one of the most worn pieces of headwear on the planet, the baseball cap, even better than it already was. Our patented technology effectively eliminates the interference that commonly occurs between your hat and your sunglasses and with two notch locations (Standard Notch and Terra Notch) it works with just about any type of glasses. The war between your hat and sunglasses is over. (less)