This rectangular frame is crafted exclusively from β titanium alloy, encompassing the temple ends and extending except the nose pads and some parts. The utilization of β-titanium alloy imparts a spring-like characteristic, ensuring a stable and comfortable fit that molds to the contours of your head. The frame exudes sophistication with its glossy and beautifully curved bridge design, making it stand out. Every JINS purchase includes free shipping, a 30-day return policy, and a 1-year limited warranty. If you visit any JINS store, you can receive a complimentary, no-hassle adjustment with your order.