High density foamAdjustable height leverSilent easy roll castersMedium piston is available to use with manicure19"W x 23"DSelect: Low Piston Option- 7.5” - 9.5” (14.5” from base to top of chair at highest point)OR Select: Medium Piston Option- 9.5” - 13.5” (18.5” from base to top of chair at highest point)