adidas Techfit Preparation Compression Short Sleeve T-Shirt Ventilated CLIMACOOL - Keep you dry and comfortable when you're on the move. TECHFIT - Focuses your muscles energy to generate maximum explosive power, acceleration and long-term endurance. Freshrite - For long-lasting odour suppression. High Elastane Content - Provides excellent support with great stretch and recovery properties. Reflective Element - For added visibility.