Material and durability: Made from strong, durable PVC. Offers better light transmittance, impact resistance, temperature resistance and scratch resistance to provide longterm strength and reliability. Antiglare and UV protection: Uses polarization technology to block harmful ultraviolet rays and dazzling reflected light from the rear of buildings or cars. Reduces sun glare and eye fatigue, while maintaining clear visibility even in extreme sunlight. How to use: Use method: First break the switch up and pull out the caliper, and then lock the caliper on the CD board. Size and compatibility: Universal sun visor size, compatible with most vehicles. When not in use, it can be easily stored in the warehouse. Once folded in place, it occupies the smallest space. Use scenarios: 1) Driving in bright sun or near reflective building facades and other vehicles, to reduce glare and eye strain. 2) Parking in direct sunlight to protect interior and improve immediate visibility when starting the drive. 3) Long highway trips with strong sun exposure, helping maintain clear sight lines and comfort for the driver.