Ecotropolis sunglasses make a unique eco-friendly statement with full wood (frames and arms) or half wood frames (just the arms) and an array of wood tones such as bamboo and walnut. Wood is a renewable resource and harmless to the environment. In addition, wooden framesare treated with natural oils/waxes, so they won't irritate your skin. Wood gives the glasses certain specificity. It’s lightweight, you will barely even feel them. Unlike a metal frame, wood will not get bitterly cold.