A swaddle is a technique used to wrap a baby snugly in a blanket to provide comfort and security. This method mimics the feeling of being in the womb, helping to soothe infants and reduce their startle reflex. Swaddling can promote better sleep by preventing the baby from waking themselves up with sudden movements. Swaddles can be made from various materials, including cotton and muslin, and are often designed with Velcro or snaps for easy use. Parents should ensure that the swaddle is not too tight, allowing for proper hip development, and should stop swaddling once the baby shows signs of rolling over.