Get one for the birthday boy or girl. Heck, get one for every person at the party. Specify age (or stick with "29" forever); specify name up to 16 characters. Sweatshirts are 50/50 blend. One-piece snapsuit and T-shirts are 100% cotton. Infant sizes 6 mo., 12 mo., 18 mo, 24 mo. Toddler sizes 2T, 4T. Youth sizes S(6-8), M(10-12), L(14-16). Adult sizes M-XXL. No rush delivery.