Sometimes babies are born addicted to drugs through no fault of their own. This is called Neonatal abstinence syndrome. These babies experience extreme tremors which can be helped with out trademarked Hug Technology® . The NAS swaddelini is made with only one end of our lightweight moisture-wicking nylon which is perfect for sensitive skin. We believe all babies deserve a comfortable and safe sleep so we are proud to present our NAS swaddelini solution.