If you want an aggressive look that can match you every step of the way, look no further than the PYTHON. The PYTHON is perfect for medium faces. Get a pair of PYTHONs and get ready to take on the world, or whatever challenge just happens to be next.. LENS - HD POLARIZED OFFSHORE BLUE Cat. 3Tint base : GreyTransmission : 12% Bollé PC lenses are tuned for marine sports with 100% UV protection, a polarizing filter to stop disturbing glare and a blue hue to enhance contrast on water.  100% UV protection  Lightweight  Polarized  Visibility  Protection