Notre Dame Fighting Irish Boy's Performance Colosseum Realtree Trail Short Sleeve T-Shirt. This kids Notre Dame t-shirt is made of 100% Polyester to ensure all day comfort and athletic feel. The moisture wicking shirt features the latest Realtree Xtra Camo pattern with rubberized Fighting Irish print across the chest. In the woods or watching the Fighting Irish play, now you can show your team pride all season. Go Fighting Irish!! Officially licensed Notre Dame Fighting Irish fan gear.