further having a cam slot 1102 such that the cam follower hinge pin can follow along the cam slot fig1 shows yet another view of the recessed hinge pin and the cam follower hinge pins 1300 and 1301 this figure also reveals the position of the recessed hinge pin when the side panels extend outward for lying flat on a floor as shown the cam following hinge pins 1300 and 1301 have traveled along the cam slot such that the crosslink support arms are recessed within the cut out area of the plug portion and further within the recess of the panel fig1 shows the opposing side of the recessed hinge revealing the pivotal interconnections 1022 and 1020 fig1 further reveals the cam slot and the cam follower hinge pin 1301 this view also reveals a pair of cam slots 1504 for receiving the crosslink support arms which follow along these slots 1504 fig1 further reveals the cam slots 1102 and 1502 for receiving the cam following hinge pins and further reveals the cam slot pairs for receiving the crosslink support arms all surface and structural material for the chair pad can be manufactured from 100 solid wood engineered wood wood laminate wood veneer or other wood fibers the most common material used for similar products is manufactured from various types of resin the woods used in the manufacturing of this produce include but are not limited to various species of bamboo cherry teak rubber tree oak eucalyptus and.