This outfit is a size 6 months. Your little boy is sure to love the bright blue with rockets scattered about. The bow tie is attached with a velcro closure so it can be adjusted for a good fit. There are star Kam snaps on the suspender harnesses. Easy to unsnap and slip off for diaper changes. There is plenty of room for a shirt underneath or cute for a photo shoot just by itself. Pockets accent the back. There is elastic in the waist and legs for comfort. This set is RTS by USPS. PayPal accepted.