Combining all of the thermal retention and breathability of this thermal crewneck with a two-button Henley collar for versatile temperature regulation. The waffle-knit interior ribbing creates a layer of air between the body and fabric for thermal retention and moisture management. Worn solo or under a jacket, this dependable classic style provides versatile comfort in a wide range of temperatures. Heavy-duty ribbed cuffs and collar retain their structure for lasting durability. The long-staple Peruvian cotton is soft and sturdy.