Proof can be traced back to the founders’ Grandpa, Bud, who built a sawmill almost 60 years ago. Fueled with “sawdust in their veins” three brothers began handcrafting eyewear out of sustainably sourced wood in an Idaho garage. Today, Proof is sold in over 20 countries worldwide offering a variety of eco-friendly eyewear materials with proceeds of every sale supporting causes around the world. https://www.iwantproof.com/