Kids Goggle 's unique Double Lens Design creates a thermal barrier, while providing exceptional optics and a superior seal. All Bolle Goggles Lenses block 100% of harmful UVA/UVB rays up to 400 nanometers. P80 Plus Carbo Glas (Anti-Fog / Anti-Scratch) applied to Bolle Ski Goggle polycarbonate lenses P80 Plus is Bolle's proprietary coating that provides maximum protection against lens fogging and scratching.