Thermal insulation is what keeps the skier or snowboarder at the right temperature: neither too warm, nor too cold. The garment then adapts itself to the physical activity of the body and the outside environment. We use wadding for insulation to keep you warm. The wadding is a synthetic material with a polyester base that stores a greater or lesser volume of air depending on the size of fibres used. The thicker the wadding, the more air there is, and the warmer it is.