REDUCE STARTLE REFLEX The transition swaddle 69 months allows baby to sleep in their natural arms up sleep position which gives baby enclose feeling of being swaddled in the womb Also baby can safely move their hands to their mouth for true Self Soothing the arms up swaddle 69 months promotes better sleep SAFE ERGONOMIC DESIGN Carefully designed with safety as top priority the newborn swaddle sack keep your baby comfortable and feel secure with its snug fit no need for loose blankets ArmsIn to reduce startle reflex OneArmOut for selfsoothing and TwoArmsOut for easy transition from baby swaddle to baby sleep sack MADE FOR COMFORT The newborn sleep sack 69 months is made from 100 premium cotton which is soft breathable and skinfriendly TOG 08 keep your baby warm and cozy suitable for moderate climates The arm and neck openings sized for a perfect fit roomy leg places promote hip healthy development DURABLE DOUBLE ZIPPER Designed with smooth 2way zipper the infant sleep sack is convenient to take on put off makes it super easy for midnight diaper change The interior zipper guard and top zipper flap prevent irritation from babys delicate skins BABY SHOWER GIFT Wearable blanket baby sleep swaddle is essential baby items for new parents the set of 2 is convenient for daily change while the neutral color fits both baby boys and girls it is perfect as baby shower gift baby registry and more Please refer to the size chart to chose the right size for your beloved one