Personalized Little Monkey 5th Birthday Boy Long Sleeve T-Shirt. THIS LITTLE MONKEY IS FIVE 5th birthday Long Sleeve T-Shirt - Charcoal with a cute smiling boy monkey holding a banana. 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