I just received a pair of prescription Panoptx sunglasses http://www.panoptx.com/ with the removable foam seal. I had Transition 5 lenses put in which turn dark quickly and back to clear at night. These glasses are the best setup I have found for riding with. Your eyes feel as if they are looking through a windshield. No tearing. I had them made at http://www.personaleyesonline.com/HomePage.html for $264. Well worth the price for anyone needing perscription sunglass/goggles !