Many of our styles have evolved, and the Jumpsuit is no exception. We have made our NIC-IV Shirts for many years and heard from so many parents how much they LOVED them. We took this great little shirt and added pants, to make it a one-piece outfit while still providing a super NICU-Friendly garment. The Velcro closures and longer side pieces allow simple fit adjustment. In addition to that, the closures at the crotch provide for easy diaper changes.