Personalized Marketing Professor T-Shirt. Marketing Professor T-Shirt - Scuba Blue with vintage color occupation logo on a retirement idea or appreciation gift Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.