Abstract: A multilayer protective liner in the form of a cot bumper is provided to protect infants when sleeping or resting in a bedding arrangement such as a cot or crib. In one form, the cot bumper has two outer surfaces of a quilted padded mesh material which not only provides protection against accidental or inadvertent contact with exposed hard surfaces of the cot or crib, but also provides for air circulation around and through the protective layer so as to produce a healthier environment for the sleeping or resting infant. The cot bumper has at least one inner core layer of a perforated resilient panel located in a pocket or envelope of mesh material formed by rows of transverse stitching at spaced apart locations. The advantage of the cot bumper is that it provides more or less continuous protection whilst allowing air movement around and through the cot or crib.