Always on the hunt for unique materials to put in its sunglasses, Shwood has teamed up with Shaper Studios to use its bio-based surf resin. Used to glass their surfboards, the marble-like material is a custom blend for Shwood that is veneered into thin pieces to apply to the frames. This is combined with Mazzucchelli acetate from Italy, durable five-barrel hinges, and Japanese CR-39 polarized lenses from Carl Zeiss, and sustainably-sourced woods in the wooden model. 

$169-$250, shwoodshop.com