These adorable Long Sleeve Boys Rompers are not only comfortable for your little boy but also super cute. With snap buttons at the bottom these are easy to take on and off & don't forget most importantly easy to change that diaper when needed. Be sure to complete this look with a pair of Shea Baby Boots! If between sizes I would size down. Material: Combo: 95% Polyester 5% Spandex BOBY: 97% Cotton 3% Spandex