Multi-Layer Canadian Maple Brown Wood Sunglasses with Brown Polarized Lenses. The Toulouse is made entirely out of wood. We have used multiple layers of real Canadian maple wood. We use outward flexible metal hinges for a flexible and comfortable fit. All GOWOOD sunglasses provide real protection with their FDA approved and CE certified category 3 high-quality lenses. They are impact-resistant and are provided with a hardwood bamboo storage box.