Woombie Air is our vented line of baby swaddling blankets intended to make swaddling easy-breezy for mom and baby. It is a one-step, self-soothing sleep swaddle with over 20 awards for design and innovation. Ergonomically shaped, with a 'hip-healthy' design and an arms-free interior, our swaddle sleeper encourages self-soothing in the Hands Over Heart recommended sleep position. Mild compression mimics the sensation of touch and the two-way zipper prevents unraveling throughout the night. Dress your small one accordingly underneath depending upon season and nursery temperature. Patented Design.