Casters are what separate this criss cross seat from its fixed-base siblings: it rolls from desk to window without lifting, then flips its armrests up so it slides back under the desktop. Faux leather over elastic sponge stays soft through a workday and wipes down when a mug tips. A tension knob releases a 90 to 130 degree rocking motion, useful during phone calls, and the gas lift moves the seat between 20.5 and 24 inches, a range that reaches standard desks and taller worktops alike. The frame holds 330 lbs. Assembled dimensions come to 31 by 27 inches with an overall height of 32.5 to 36 inches, and at 34 lbs one person can carry it upstairs. Assembly is required, and the parts ship flat with the hardware and a user manual in the box.