adidas Techfit Cool ST 9 Compression Short Techfit Fabric - Elastane based fabric that provides you with maximum flexibility. Climacool Ventilation - Strategically placed ventilation help to keep you cooler and drier for longer. Wicking Properties - Helps to guide sweat away from the garment to keep you cooler and drier for longer. Flatlock Construction - Reduces chafing and skin irritation proving for a more comfortable run. Techfit Tape - Designed to help your garment keep its shape whilst you perform.