Plastic's great for lots of things, but it doesn't make very distinctive sunglasses; wood, on the other hand, is something that you don't see every day. Shwood's working to change that, though, by handcrafting shades like the Canby Sunglasses, which use a flexible birch core overlaid with walnut or zebrawood for a unique and seriously cool look. All their wood is sustainably harvested, and the CR-39 lenses are produced by Carl Zeiss Optics, so you know you're getting top-shelf clarity and precision. Stainless steel spring hinges let the Canby fit comfortably on almost all faces, and Shwood sends along a woolen storage pouch for safekeeping, too. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.