Treeline Glacier Sunglasses (Black Slate)Why It Made The List Red Dot Design Award winners built for road trips, long days in the sun and high alpine adventures, combining classic glacier glass style with modern, sustainable performance. Polarized lenses reduce glare and enhance visibility on snow, water, and rock, while removable magnetic side shields offer added peripheral protection when you need it and pop off when you dont. The frames are made from Sunskis lightweight, recycled