A swaddle blanket is a soft piece of fabric designed to wrap around a baby snugly. It helps create a cozy environment that mimics the womb, providing comfort and security. Swaddling can help soothe infants, reduce their startle reflex, and promote better sleep. These blankets come in various materials, such as cotton or muslin, and often feature adjustable fasteners or stretchy designs. Many parents use swaddle blankets during the first few months of a baby's life, as they can aid in calming fussy babies and establishing a sleep routine.