Introducing the Sticks x Stones Recycled Sunglasses Collection from Proof Eyewear. Totally sustainable and even more fashionable, these sunglasses will enhance any style. Each pair actually features real rock. Specifically, slate. Even with this incredible material, the Sticks x Stones Sunglasses come in about 50% lighter than most pairs. This is due to the triple layer technology which has wood in the core. Durable and great for the environment, each pair is unique with its own markings in the stone. In addition to the perfect style, they also offer a seamless fit. The spring-loaded hinges conform to the shape of your face every time. The Sticks x Stones Sunglasses are complete with polarized lenses which offer 100% UVA and UVB protection. The Sticks x Stones Sunglasses come in three iconic styles: Moab, Rockland, and Sandpoint. Rock on with your own pair of the Sticks x Stones Sunglasses.