Kask's Valegro features a lightweight polycarbonate shell that has been tested and refined to get the best results in term of thermo-cooling performance. Indeed, it offers maximum cooling through the 37 ventilation holes which are combined with a breathable and quick-dry padding. The Hyvent technology implements the air flow and breaks up the exchangeable heat. The highly breathable padding speeds up the evaporation process of perspiration, slows down the formation of humidity and keeps the temperature constant.