The patent-pending Weight Transition Swaddle is the perfect solution when it's time to transition your baby out of a swaddle and into a wearable sack. The gently weighted,innovative arm feature helps control the Moro (startle) reflex, allowing for an easy,safe,and secure transition into dreamland. Tagless design to avoid irritation Two-way zipper for easy diaper changes Helps decrease irritability while promoting self-soothing Machine washable Evenly distributed weight from shoulders to toes Innovative weighted arms This swaddle has been used but is in very nice condition.