From HALO, this SleepSack® wearable blanket features: Recommended fit: 23-26 in / 13-18 lbs ross toss all over print  3–way adjustable swaddle roomy sack design Signature "Back is Best" embroidery Adjustable fasteners for perfect fit Immobilizes arms to prevent startle reflex or scratching inverted zipper allows for easy diaper changes Use over regular sleepwear recognized by the International Hip Dysplasia Institute as promoting healthy hip development Premium fabric; no added chemicals Preemie; 14-19" and birth to 5 lbs. NB: 0-3 Months, 19-23" and  6-12 lbs. Small: 3-9 Months, 23-26" and 13-18 lbs Cotton Machine wash cold with like colors on gentle cycle (turn inside out and close zipper before laundering) / tumble dry low /do not bleach, iron or dry clean Imported.