【UV400 Protection】: Featuring UV400 lenses that protect your eyes from harmful UV rays during outdoor activities. 【Spring Hinge】: Equipped with spring hinges that provide extra flexibility, ensuring a comfortable fit for all head sizes. 【Unique Lens Colors】: Available in various lens colors including black, redn, green, and blue for a distinctive look. 【Square Frame Shape】: The square frame shape adds a modern touch while maintaining a classic aesthetic suitable for both men and women. 【Lightweight Material】: Constructed with durable PC frame materials that offer lightweight wearability, making them ideal for extended use.