Personalized Personalized 1st Birthday Boat Long Sleeve T-Shirt. This fun personalized 1st sailboat Long Sleeve T-Shirt - Pink makes a great gift idea for a girl or granddaughter's birthday. Make a custom gift idea for a 1 year old. 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