UV 400 indicates an eye protection item that has been optimized to prevent eye exposure to both UVA and UVB radiation. Eyes are exposed to sunlight could be at risk for serious damage to their eyes, which can lead to a number of issues including cancers of the eye, vision loss, cataracts, and blindness.
Safety Planet provides different lens types with UV protection: UV 400 Cycling Glasses, UV 400 Glasses for Outdoor Sports, UV 400 Ski/Snowboard Goggles.

Waterfloat floating material -  Never worry your sunglasses will be lost during ocean activities.

1. Unique composite materials create lesser density than water to make sunglasses floated.

2. Materials with high bio-contents and polymers with strong properties.

3. Rigid, flexible and light weight.