This Nike Men's Tech Knit Ultra Long Sleeve Running Top Shirt in Dark Gray (Size M) is the perfect addition to your activewear collection. The lightweight and breathable fabric, along with the moisture-wicking and stretch features, make it ideal for various performance activities like gym & training, track & field, walking, weightlifting, running, yoga, racing, hiking, and running & jogging. The solid pattern and crew neckline with a pullover closure give it a classic look, while the reflective accents and mild compression level add to its functionality. The shirt is made of 63% Nylon / 37% Polyester and is suitable for medium fabric wash. The Nike Tech Knit product line represents quality and sophistication in sports apparel, making this shirt a must-have for any sports enthusiast.