The Airwrap Cot Liner Muslin is a cot bumper alternative and is one of the most trusted and popular nursery bedding essentials in Australia since 2006. Moderately padded to help parents protect their baby from knocks and from tangling in the cot framework. Air-permeable with vented corners for air to move. Designed in Australia, the adjustable 4-sides cot liner muslin fits most rectangular cots with rails/slats on up to 4 sides and is machine washable.