Bolle Monarch Snow Goggles are great for small faces. These Bolle goggles have Forestay system with swinging outrigger to maintain perfect fit with. This goggle by Bolle features double layer face foam for more comfort. Bolle Monarch Ski Goggles. Flow-Tech Venting was designed to reduce fogging and optimize the flow of air over the inside of the lens, Bolle's venting ports control airflow, while preventing clogging from snow and ice. The Bolle unique double lens design creates a thermal barrier, while providing exceptional optics and a superior seal. Applied to Bolle polycarbonate lenses, P80 plus / Carbo Glass is the Bolle proprietary coating that provides maximum protection against unwanted lens fogging and most scratching. All Bolle lenses block 100% of harmful UVA / UVB rays up to 400 nanometers.