Spring skiing is about sunshine, corn snow, and a few adult beverages. Winter parkas get traded for T-shirts, and resorts reverberate with “Good Vibrations.” When temperatures rise, lose the stuffy goggles, grab some shades, and celebrate the coming of summer. These eye-catching sunglasses—all are polarized for diminished glare on snow or water— will score style points from the slopes to the shoreline without sacrificing performance.