The Los Angeles is the most popular GOWOOD style. The legs are made of real walnut wood. The front is made of acetate. 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 for protective purposes, as well as with a microfiber pouch to clean the lenses.