A crib bumper is provided for a crib that includes a plurality of spaced support elements and four corner posts. The bumper includes at least one panel that is configured to at least seat against the inner surfaces of the spaced support elements and a corner post attachment member that is coupled to the panel. The corner post attachment member defines a pocket that receives one corner post and permits the corner post attachment member to surround and be securely attached to the one corner post. The corner post attachment member has free edges that are attached to one another by means of a first fastener and includes a means for adjusting and changing at least one dimension of the corner post attachment member to provide a secure attachment of the corner post attachment member to the corner post.