360°SWIVEL, ADJUSTABLE HEIGHT MESH OFFICE CHAIR: 360 degree swivel, armless office chair, height adjustable 4.7 inch (12 cm) . Overall Height (top to the floor): 33.1"--37.8" (84--96cm); Seat Height (seat cushion to floor): 17" - 21.7" (43-55 cm)
ERGONOMIC OFFICE CHAIR: provides lumbar support to reduce back pain causing by long time sitting. Mesh covers both the padded seat and the chair back that allows air to circulate to keep you cool while leaning. Thicken padded seat cushion offers for all-day comfort.
ARMLESS OFFICE CHAIR, EASY TO ASSEMBLE: Easy to slide under your desk, space saving. No limits, no narrows, no uncomfortable causing by armrests, friendly to bigger person. Easy to put together, video assembly instruction provided on the product page.
SUPERIOR QUALITY MATERIALS: American-made high density mesh, high resilience foam cushion, SGS certificated gas lift cylinder. All materials are in good quality, durable, and not easy to deform.

Got 2 of them. $20 each. Can deliver to Stanford or Palo Alto.