Engineered for the ultimate in performance and comfort, the Under Armour Seamless Stride Men's Short Sleeve T-Shirt is your go-to for high-endurance training. Its premium 64% nylon/36% polyester blend is a lightweight, moisture-wicking fabric that pulls sweat away to keep you dry and cool. Strategically placed engineered mesh panels provide maximum breathability right where you need it most.The nearly sew-free seamless construction is designed to eliminate chafing during long runs or intense gym sessions, while the 4-way stretch material ensures unrestricted mobility in every direction. It also features built-in anti-odor technology to stay fresh. Finished in a sleek Black/Reflective colorway, this shirt includes integrated reflective accents for increased visibility and safety during your low-light workouts.Follow care instructions to maintain its performance: machine wash cold with like colors, tumble dry low or hang dry. Do not use bleach or fabric softeners. For best results, wash the garment inside out to protect the seamless knit and reflective details. This XL adult male size is crafted for a perfect, athletic fit.