Designed by a nurse, the SwaddleDesigns Omni Swaddle Sack with Adjustable Wrap and Arms Up ½-length sleeves with Mitten Cuffs is a wonderful choice for swaddling a newborn. Studies have shown proven the swaddle babies sleep better. When baby sleeps better, everyone gets more sleep! The versatile design provides parents with more options to adjust how they swaddle as baby grows. Parents can open the cuffs, so baby can self-soothe by sucking on hands or close the cuffs to protect the newborn from facial scratches. The 2-way, double pull zipper makes the Omni easy to use and the zipper guard protects baby's delicate skin. Our super soft 100% cotton fabric is breathable, stretchy, and natural. Selected by Major US Hospitals to promote Safe Sleep and deemed Hip Healthy by the International Hip Dysplasia Institute.