Note:
1. Color change time: Winter-1 minute, Summer-40 seconds. 
2. Speed depends on sunlight and UV intensity! 
3. The rate of discoloration is related to the intensity of ultraviolet light and temperature. (If the UV intensity and temperature are low, the speed of discoloration will become slower).

Description: 
1. Glasses Features
    （1）The frame made of TR90 material are durable, lightweight, and flexibility.
    （2）The 360°C rotate adjustable nose pads.
    （3）Non-slip temple ends help to secure the sunglasses in place. 
    （4）The HD lens UV400 protection coating, blocks harmful UVA & UVB rays.
    （5）Comes with a myopia frame. It can be stuck in the groove near the nose clip of the sports sunglasses.
    （6）Suitable for most face types.
2. Photochromic PC lens with multilayer coating. The photochromic lens the color automatically changes from light to dark in respose to the UV. It blocks harmful UV up to 400mn and make your eyes comfortable in most light conditions in the daytime. The best photochromic effect is in the temperature range of 10℃ (50℉) to 23℃ (73.4℉). The color of the multilayer coating is more visible when the photochromic lens gets darkening and looks more stylish.
3. The photochromic lens provides true color, reduces glare and make your eyes feeling comfortable. It adjusts automatically the color perception of your eyes when the lens color changes. It enhances the blue or red, you can see more clearly road conditions and surroundings and react faster to keep you safe.
4. Riding sunglasses are perfect choices for outdoor sports and activities, such as driving, fishing, traveling, hiking, walking, riding, skiing, running, racing, climbing, trekking, and it's also suitable for high fashion decoration and daily wearing all year around.

Package Include:
1 * Photochromic Glasses (Colorful Lenses)
1 * Glasses Bag
1 * Glasses Cleaning Cloth
1 * Glasses Case
1 * Myopia Frame（ Does not scratch the lens）