The Mapu sunglasses by Karün are functional and striking. The sturdy ECONYL regenerated nylon (from fishing nets from Patagonia and other discarded nylon) construction means these shades are a logical choice for your active lifestyle. For more comfort and all-day wearability, the flexible material in the frames allows these sunglasses to better conform to your head. All this technology combines to create a pair of shades you can truly rely on.