Long Sleeve Baby Vests - for Boys, Girls comes in sizes Newborn, 0 - 3 Months, 3 - 6 Months, 6 - 9 Months, 9 - 12 Months, 12 - 18 Months, 18 - 24 Months and 2 - 3 Years. All our vests are made to order, and are of a high standard.