Size M. Ten Thousand Durable Tee Shirt Heather Navy. A workhorse tee that's built for comfort and extreme durability. Worn once and in excellent condition. Great tee, but my husband wanted a larger size. -Permanent silver ion anti-odor treatment -Anti-Chafe flatlock seams -Passed testing for over 20,000 anti abrasion rubs -Passed testing for over 100 pounds of pressure per square inch -65% Polyester / 35% Cotton ✳️Excellent Condition 12184 202401215 Ten Thousand Men's Tee Heather Navy size Medium