Personalized Worlds Best Boss T-Shirt. World's Best Boss occupation T-Shirt - Tie Dye Green with a great sports look logo in navy and tan makes a stylish gift for any manager, CEO, office director, principal or business owner. 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.