Abstract: A swaddling device can comprise a tapered, seamless infant swaddling blanket with a first opening and a second opening. The swaddling blanket can be pulled on over the head of the infant, and restrict the infant's arms from moving, flopping, and/or rotating. The swaddling blanket can allow a caretaker to easily slide a lower portion of the material up towards the infant's stomach in order to change the infant's diaper without having to completely remove the swaddling blanket. The swaddling blanket can further include a seam or seams to inhibit slippage. The swaddling blanket can be comprised of fire-resistant material.