Innovative design: Swaddling helps babies sleep better, longer, and safer; designed by a certified infant care specialist and nursing team, this ergonomically shaped swaddle wrap allows babies to sleep in the preferred ‘Hands Over Heart’ position, with skin-on-skin contact mimicking parental touch, fostering self-soothing Promotes safety and self-soothing: The Simply Woombie Baby Swaddling Blanket encourages back sleeping and eases the transition from womb to the world; stretchy but snug fit moves "with" the baby, recreating a womb-like environment and simulating the feeling of being held, touched and cuddled Soft and comfortable: Delicate, soft fabric; hip and shoulder-friendly design with narrowed waistline gently compressing the tummy, providing additional comfort for your baby Easy to use: No origami required, this easy to use one-step baby swaddle will not unravel as a blanket can; two-way zipper allows for easy diaper changes at night Product specifications: Includes (1) Simply Woombie Wearable Blanket – Newborn: 20-22 inches, 5-13 lbs.