Soft and Comfortable Material: Our swaddles are made of pure cotton, light, soft and skin-friendly. Machine washable (fold down hook-and-loop part for washing so that all your clothes don't end up stuck to them) Adjustable Fit for Growing Babies: Our swaddle wrap fits newborn babies 0-3 months, 6-13 lbs. You can adjust the tightness of the baby swaddle with your baby's growth Sleep Saver Design: The swaddle sack is designed to create a cozy, womb-like feeling for baby and prevents startle reflex that can wake your infant. If your baby has a hard time sleeping, these allow him/her to be comfortable. This results in much needed rest for weary parents Easy To Use Secure Design: Nursery swaddling blankets can secure and adjustable. The center hook-and-loop tabs keeps the inner cloth in place, making these wraps easier to use than a traditional baby blanket Complete Set for All Seasons: Comes with 3-pack baby swaddle wraps and hat, suitable for all seasons use. These swaddle blankets are baby registry must haves for new parents Color Options Available: This baby swaddle sleep sack set comes in a coordinated white, grey, and blue color scheme suitable for boys and girls