Shell Desk Chair, Supports Up to 275 lb, 17" to 20" Seat Height, Black Seat, Black Back, Black BaseThe minimalistic, easy to use Shell Desk Chair provides intuitive adjustments and a sleek design that suits any workspace. Featuring a contoured back for lumbar support and a frame that naturally flexes to fit the individual user, this task chair is great for long work days. For additional comfort, there is a cushioned, upholstered seat with arms. Holes in the chair's back provide comfortable breathability. Upholstery is vinyl, making it easy to