Hanes MXT1P4 Mens X-Temp Dyed Black Crewneck Undershirt 4-Pack 60% rayon/40% polyester 60% rayon/40% polyester Moisture-wicking technology keeps you cool and dry. Lay Flat collar keeps its shape wash after wash. Tag-free for itch-free comfort. Convenient 4-pack includes 1 free undershirt.