The Woombie Original Nursery Swaddle Blanket helps moms swaddle the way nature intended. It is a one-step, self-soothing sleep swaddle with over 20 awards for design and innovation. This wearable blanket is ergonomically shaped with a 'hip healthy' design and an arms-free interior encouraging self-soothing in the Hands Over Heart™ recommended sleep position. Mild compression mimics the sensation of touch and two-way zipper prevents unraveling throughout the night. The cotton/spandex blend fabric is light, breathable and provides a multi-dimensional stretch. Dress baby accordingly underneath depending upon season and nursery temperature. Patented Design.