an adjustable insert, wherein the adjustable insert comprises two or more adjustable portions hingedly connected to a center portion;

a nozzle fixedly attached to the adjustable insert, wherein the nozzle is in fluid communication with one or more ventilation ducts of a ventilation system by which the nozzle is configured to receive forced air;

a mesh pad, wherein the nozzle is configured to deliver the forced air to the mesh pad;

a cushion;

a perforated covering comprising a front side abutting a forward-facing surface of the mesh pad and a rear side abutting a rear-facing surface of the cushion, the perforated covering enclosing the mesh pad and the cushion, wherein the mesh pad is configured to allow the forced air to flow through the mesh pad to the perforated covering, wherein the perforated covering comprises a plurality of perforations through the front side of the perforated covering, wherein the plurality of perforations are configured to permit a fluid transfer of the forced air through the front side of the perforated covering, wherein the adjustable insert is coupled to the rear side of the perforated covering, wherein the two or more adjustable portions and the center portion each comprise a plurality of holes configured to permit fluid transfer of the forced air through the adjustable insert; wherein the nozzle is configured to first deliver the forced air at a bottom edge of the mesh pad; and wherein the cushion abuts the mesh pad and the rear side of the perforated covering.