The Gore Flash 2.0 Running Shorts feature amazing cooling and venting systems, working to maintain and regulate body temperature. The human body performs best at an external temperature of around 80°F. Microfibre is essential for balanced temperature management, as it keeps the temperature constant. Products made of microfibre are more breathable than natural fibres, and have excellent thermoregulation qualities. Stretchy, fast-drying microfibre garments are durable, easy to wear and easy to care for.