CoolBest II? Thermolysis and Coolness CoolBest II? to responds environmentally friendly. It''s not only has the quick dry function as CoolBest?, but also adds the cooling powders which absorbs heat slowly and dissipates heat quickly. Coolbest II? is able to cool down the temperature about 1 to 2 degree. In this way, you do not even need to turn on air conditioner to maintain cooler room temperature. It responds the energy saving.