Personalized Bearded Collie Dad (Worlds Best) Long Sleeve T-Shirt. Bearded Collie Dad Long Sleeve T-Shirt - Charcoal has pretty worlds best Bearded Collie Dad dog owner logo in brown and tan. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL