Active or resting, the Dainese Undergear supports the body in any situation maintaining the optimal temperature of 37 °C. It cools, when you sweat, and warms, when you freeze. The intelligent 3D-BionicSphere® system on the chest and back leaves a residual moisture on the skin, which evaporates and cools. SweatTraps® transport excessive sweat directly to the outside. If no sweat is present, then a unique process uses air heated by the body as thermal insulation. The accordion principle of the ExpansionRibs keeps knees and elbows pleasantly warm, even when bent.