The Baby Brezza 2-in-1 Double Zipper Baby Sleepsuit is a breathable and comfortable swaddle transition sleep solution designed to help babies sleep safely and soundly. Featuring mesh panels for airflow, this sleepsuit easily converts into a sleep vest by removing the detachable sleeves—making it perfect for year-round comfort and smoother transitions from swaddle to independent sleep. Compares to Baby Merlin Magic Sleepsuit. This size fits 3-6M or 12-18lbs.