The 2-way swaddle has a legs in/legs out design that allows baby to be cooled down, warmed up or cleaned up (diaper changed) without unswaddling. The “no break-out” zipper design promotes longer, healthier sleep by recreating a womb-like comfort. Parents will sleep better knowing that there is a no-rise neckline, and that this product is designated “hip healthy” by the International Hip Dysplasia Institute. 100% Cotton. Designed for 0-3 months babies that weigh 6-14lbs.