Avengers Mens Graphite Heather Sleep Pants Soft and Smooth Cotton/Polyester Blend - 60% Cotton, 40% Polyester To best care for printed apparel: Wash in cold water, Hang to dry, Do not feed after midnight. Regular adult men's sizes Officially licensed Avengers apparel Printed and Designed by Bioworld Features Iron Man, Thor, Hulk and Captain America on the sleep pants Soft and comfortable enough to sleep in, but you'll want to wear them all day long!