SILICONE FRAME: Protects glasses from scratches, prevents glasses from getting uncomfortable, and ensures a comfortable experience. The clip-on design is a new update, super lightweight, and barely noticeable on your face. UV400 PROTECTION POLARIZED LENS: Reduces glare from roads, water, snow, and glass walls caused by sunlight reflection. Anti-UV lenses can block 99% of harmful UVA and UVB rays, providing a clear and comfortable view while protecting your eyes from long-term UV damage. EASY TO USE: The clip-on sunglasses are easy to install; simply clip them over your existing glasses for a brand-new pair of polarized sunglasses. The clip is firm and strong, ensuring they won't easily fall off the frames. STYLISH AND STURDY: These square clip-on sunglasses feature high-quality TAC polarized lenses and a soft rubber clip with a 180-degree flip design. With a sturdy clip, it won't easily fall off your glasses and can be folded back when not in use. Multiple color options: This polarized sunglasses clip can be worn with a variety of clothing styles, meeting your different needs. While the polarization of the yellow lens may not be as strong as that of the other colors, it's more suitable for nighttime activities. The other lenses are more suitable for working under strong sunlight; they are polarized for sunnier, more glare-prone activities.