Smith Mainline Polarized Sunglass:
You have it made in the shade or the white-hot glare with the interchangeable lens system featured in Smith's Slider Series Mainline sunglasses. Three distinct lenses are standard equipment, allowing you to adapt to changing light conditions throughout the day without buying extra eyewear. The Mainline's Grilamid frame design is optimally designed for sport situations where visual acuity is a top priority. The polarized lens is ideal for waterborne activities ranging from paddling to fly-fishing.