A pillow has adjustable compressibility and/or loft. The pillow includes a casing, an insert pad, and a support member. The insert pad is arranged within the casing. The insert pad includes a plurality of regions arranged atop one another to form a plurality of layers. The support member is arranged within the casing such that at least a portion of the support member is directly interposed between two layers of the insert pad and such that the support member is in direct contact with the two layers of the insert pad.