Mens Johns Hopkins University Athletic Active Dri-Fit Tee Shirt Breathable Training Shirt Featuring Raglan-seamed Short Sleeves. 3.8-ounce, 100% Polyester Jersey. Find Your Size On The Chart Below. If You Prefer A Looser Fit, Go Up A Size. Perfect Option During Various Indoor Activities And Outdoor Excursion. Moisture Sensing/Quick Time Dry/TWO-WAY Air Circulation.