Designed to be worn over your baby s favorite pajamas Made with 100% Cotton Breathable Muslin Fabric in fun Bacati - prints. The wearable blanket replaces loose blankets in the crib that can cover your baby s face and interfere with breathing. In addition to sleeping safer it helps babies sleep better too. It s a warm cuddly blanket they can t kick off; ensuring baby sleeps soundly throughout the night. New 100% Cotton Breathable Muslin is lightweight soft and Breathable. Soft 100% Cotton Percale and machine washable. Cotton Fabrics are excellent with newborn babies and does not give skin rashes like other polyCotton or polyester Fabrics give. Gets softer with every wash. Available in four sizes: Newborn (19 to 23 inches 0 to 10 lbs) Small (23 to 26 inches from 10 to 16 lbs) and Medium (26 to 30 inches from 16 to 24 lbs).