Comfortable light cotton-blend undershirts have the added benefit of breathable mesh at the neck for direct airflow. Made of cotton and polyester. 4 Pack. Air Ease wicking helps keep you drier and more comfortable throughout the day.. Crew neck has a narrow fine-rib band that is double-stitched to help it lie flat.. Short sleeves have a trimmer fit.. Seamless sides.. Mesh inset at back of neck delivers targeted airflow to help cool you more directly.. Tuck-in length.. Tagless.. 60%?Cotton, 40%?Polyester. Imported. Machine wash?.