Flourish Office Adjustable Hydraulic Swivel Kitchen Stool Middle Back Bar Stool Black high density sponge provides optimum comfort and promises good elasticity and better adaptation. it is not easy to compress and slope high quality materials, the high quality faux-leather surface feels comfortable and is easy to clean with waterproof Height adjustment works flawlessly, chrome base dia is 16.1"with rubber ring on the bottom to prevent scratching hardwood floor and carpet. Can be use for Kitchen Stool,Medical Stool,drawing stool,bar seat,sewing chair,lab stool,doctor stool,massage stool,used as a guest chair for kitchencounter top interior seat size is 16.5" , adjustable height from 23.6"-31.5" can fit under a standard height table PU seating ,chromed pole and gas lift with comfortable footrest. 16.1&#034; diameter chromed plate The main parts are seating ,chromed pole ,adjustbale gas lift ,chromed plate. The chair is useful for home kitchen and bar, the seat height can be adjusted from 22&#034;-30.3&#034; according to your need. 360 angle rotation Seat size: 13.8&#034; Wx15.7&#034;D, Back size: 20.5&#034;Wx7.8&#034;H, Seat height from 22&#034;to 30.3&#034;H,Back height from 32.2&#034; to 40.1&#034; , N.W.: 33lbs, G.W.:36lbs It is easy to assemble with 4 steps ,Assembling instruction and Assembling tools are in the package Use by children must be under tutelage of adult