The Sydney style looks a bit like the Los Angeles but has more square shaped lenses. The legs are made of real walnut wood. The front is made of polycarbonate. 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.