WarbirdShirts&trade; Men's Grumman F6F Hellcat Fighter Short Sleeve T-Shirt WarbirdShirts feature a full color profile illustration and complete aircraft specifications printed on a high quality 100% Pre-Shrunk Cotton 6.0 Oz T-Shirt. Warbird Shirts The Gold Standard in Aviation Clothing The perfect gift for aviation enthusiasts from 9 to 90. Featured in Museums & Aviation Sites Around the Globe