UV400 PROTECTION POLARZIED LENS - Anti glare from road, water and glass wall cause by sunlight reflection, capable of blocking 100% of harmful UVA and UVB radiation, provides you clear and comfortable vision while protecting your eyes against long term UV damage. The lenses coatings are ideal additions to your existing pair of glasses or new spectacles if you spend a lot of time in the sun.EASY TO USE - The spring loaded flip up shade is easy to wear, just need to clip on over you existing glasses, youll get an brand new polarized function sunglasses. The clip on is tight and strong ensures it won't fall off from the frames.ELEGANT AND STURDY CLIPS - This stylish clip on lens is lightweight, only 6.8g, you will hardly feel them when wearing it. Clip is small and easy to use, its more elegant than the traditional big lousy clips. This square clip on sunglasses is fitted with high quality TAC polarized lenses and soft rubber clip with 180 degrees flip up design, durable and convenient to carry.OCCASION - Different color lenses will match your different needs. Gray and Blue lenses are for day use, yellow lenses with night vision function are good for night use. Clip on sunglasses is Ideal for driving, golf, fishing ,skiing, cycling climbing Trekking or others outdoor activities.