Jersey Seating Economy PU Leather Working Stool For Doctor, Dentist, Salon, Spa, Hydraulic Lift, & Swivel (1817) Cushion PU Leather. Hydraulic Lift & Swivels 360 Degrees. Seat: Width 13.8", Depth 16.1", Back: Width 12.2", Height 11.4", Height of Seat: 17.3" to 20.5" UPDATED VERSION: customers have told us in the past that the regular wheels do not work well on hard (wood) floors and so we upgraded the wheels to higher quality rubber/plastic so that they will work smoothly on hard (wood) and soft (carpet) floors. We have also added memory foam so it is more comfortable.