Vista Sport features designs for the active individual. The frames are light and comfortable, something absolutely essential while trying to break that personal record. The frames are made of surgical grade stainless steel, a material that has been tested in the worst of conditions and have yet to falter. Its anti-corrosive properties means the reason you’ll buy a new pair of glasses is because you got tired of wearing them.WARNING: The Following Prescription Lens,Eyeglasses, reading glasses, and sunglasses products can expose you to chemicals including Bisphenol A (BPA), which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.