Abstract: A fitted sheet, especially for use as a crib sheet for covering, for protecting a mattress and for completely and positively encasing and engaging the entire mattress such that a corner or any portion of the crib sheet can not be inadvertedly pulled loose by an infant and thereby significantly reducing the risk of an infant's chance of suffocation due to entanglement in the crib sheet. The fitted sheet includes a coverlet, generally conforming to the dimensions of the mattress, having a top panel spaced from and parallel to a bottom panel, a first end panel and a second end panel extending between the top and bottom panels and a first side panel and a second side panel extending between the top and bottom panels. The coverlet has a pad member formed of a liquid absorbent material, a base member formed of a liquid impermeable material, joined to a cover sheet, by sewing, to form an integral layered structure.