High Back Massaging Black PU Leather Executive Office Chair (Black) 6-point multi-function vibration massage | Simple to operate controller | 5 massage modes - variable massage intensity Reclining backrest and tilt lock | Height adjust | 3 message zones - back, lumber, & thighs Seating Area dimension: 20.5" x 20" (W x D) | Adjustable height for seat: 17" to 21" Back Rest width: 21.5" | Back Rest height from seat: 27.75" Overall height: 43.5" to 47" | Overall Width: 26"