Compression Shirt Long Sleeve for Running Fitness Workout Base Layer Black Great for cycling, running, training, competing, skiing, snowboarding and all weather sports and activities Fit and comfortable enough to help you move fast, improved performance and reduces muscle vibration, reduce overuse injuries Faster warm-up, heat retention and quick dry, make you warm and dry in the winter and cool in the summer Polyester 86%, elastane14%.light,quickly dry, recycling, reduce skin friction and keep you comfortable and dry