Based on the unique Japanese ideology of "subtractive aesthetics," these frames are designed with simple, delicate curves that blend naturally with the contours of the face. These curves are not only beautiful, but also functional, and provide a sense of comfort when worn. It's a perfect fusion of traditional Japanese aesthetics and modern technology. 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.