About SNOO Sleep Sack<br>The 5-Second Swaddle!<br>This award-winning swaddle sack was created by Dr. Harvey Karp, America’s most celebrated pediatrician. Dr. Karp is the doctor whose 5 S’s started the Swaddle Revolution and he designed every detail of SNOO Sleep Sack with baby safety—and parent sanity—in mind.<br>SNOO Sleep Sack is the ultra-soft, ultra-easy swaddle sack that helps babies be happier and sleep longer!<br>Made with 100% organic cotton<br>SNOO wings that keep babies safely on the back…for all naps/all nights<br>Special inner arm bands and leg flap keep even little Houdinis bundled all night<br>Perfect for healthy, growing hips (International Hip Dysplasia Institute seal of approval)<br>Extra-quiet Velcro, so light sleepers don’t startle awake with diaper changes<br>Breathable mesh—at shoulders and legs—to reduce risky overheating<br>Arm openings that are easy to unsnap for babies who prefer their arms out<br>Double-zipper—opens from top or bottom—for easy midnight diaper changes<br>We’ve worked hard to think of it all!<br>Colors: Rose Planets, Teal Planets, Midnight Planets, Graphite Planets, Ivory Planets, Ivory Planets with Black Wings, Graphite Stars, Ivory<br>Intended for use in SNOO only.<br>SNOO Sleep Sack Size Guide<br>Small: 5-12 lbs<br>Medium: 12-18 lbs<br>Large: 18-25 lbs<br>Note: SNOO Sacks and sheets sold separately. Click here for SNOO Sheets.<br>