?Sizing Recommendation?Swaddle must be appropriately sized, snug, positioned around baby’s torso and securely fastened. Our fabric is designed to be cozy with some stretch for comfort. Because of this, it can run slightly bigger than our other swaddles. Make sure to choose the correct size for your baby’s height and weight. We recommend sizing down if your baby is in between sizes. View the size chart to select the proper size for your child. ?Easy To Use?Easy to change the diaper ,the inverted zipper opens from the bottom.Just move the zipper under the baby sleeping bag to the appropriate position to prevent the baby from catching cold, so that the novice mother more convenient operate. ?A-shaped Design?Sleep sack’s upper is narrow and the lower is wide, which meets the needs of baby’s growth and development. The upper body is narrow to prevent baby's hands from moving at night , so that he can sleep peacefully. Lower body is wide. M-shaped sleeping position is good for baby's leg development. ?Cozy 3-IN-1 Swaddle Design?The only 3-way adjustable swaddle that adjusts to your baby's sleep style. Swaddle arms in, hands-to-face, one or both arms out to ensure baby's best sleep and an easy and gentle transition to the SleepSack wearable blanket when it is time to stop swaddling. ?100% Cotton?The Baby swaddle blanket is made of super soft 100% cotton. soft and skin-friendly. Sweat-absorbing and breathable swaddling blankets keep newborns comfortable without overheating.Easy to wash and dry, do not worry about shrinkage after washing.The 1.0 Tog is suitable for 21-23? / 69.8-73.4?.