Convertible Woombie, with or without vent: Arms open to convert from the Original Woombie swaddle sleep sack to an arms-free sleep sack when the time arises to transition the baby. Do whatÃ¢€â„¢s most comfortable for your baby with either option! Cotton/Spandex blend. Fabric stretchy.
Swaddling has been proven to help babies sleep better, longer & safer. The Woombie swaddle has received over 14 awards for design & innovation and has been nominated as "Moms Favorite Swaddle" for effectiveness and ease of use. Our Infant Care Specialists at Woombie do not believe in restricting the arms and hips to establish successful sleep patterns. By allowing natural "womb-like" movement to occur, baby's transition from womb to world will be more effective and appreciated by moms and little ones.