KS Sport Performance Crewneck Undershirts are an extra layer of protection under a dress shirt or sweater. Also great to wear on the track or in the gym. They're moisture , clean, and have breathable mesh panels for maximum airflow. Relaxed fit. Crewneck. Moisture . clean. Breathable mesh panels. Tagless - no more itchy labels.Big length approx. 34" Tall length approx. 35". Cotton/polyester. Machine wash. Imported Pair our performance undershirts with KS Sport and .