How made for Cooling Fabric ? This Cooling Fabric in the synthetic fibers (such as polyester fiber, nylon) in the spinning process to add ore powder, jade powder and other materials. Cooling Effect By the Cooling Tech. This fabric provide cool feeling of temperature. 1~2℃ lower when touching. Give wearer cooling effect. Product Features: This type of synthetic fiber clothing, usually drawn into a cross-shaped or Y-shaped cross-section yarn, woven into a more loose breathable knitted fabrics to enhance the effect of ventilation and perspiration.