Bolle Volt Plus21360Matte Blue / Green Emerald LensLens Category: 2Bolle Volt Plus is designed for kids (age 6+). And it fits comfortably over helmets. Its polycarbonate lenses provide the greatest impact protection. These stylish blue goggles feature a versatile category 2 Green Emerald lens (delivering clear views in mixed sunny/cloudy conditions). Mirror coating deals with glare and increases contrast. CarboGlas coating makes lenses more scratch resistant.Flow-Tech venting directs air over the lens, blasting away moisture. P80+anti-fog coating stops water droplets sticking to the lens. Double lenses split between cold air outside and warmer air inside the goggle. So fog is eliminated. Face foam ensures warmth and comfort. UV400 lenses. Bolle Goggles come with a one year warranty.