Steel, Polyester, Foam, Plywood, Pp Plastic (Polypropylene) Active Sitting Anywhere: This ergonomic wobble stool with an 8° tilt promotes healthy posture and active sitting, helping reduce back pain and stiffness. Its sleek design complements any modern home or office Effortless Height Adjustment: Easily change your seating height from 23.6" to 33.3" using the buttons beneath the seat, finding your ideal ergonomic position for standing desks, counters, or workspaces Comfortable Padded Seat: The large 16.5"D x 15"W seat is padded with thick foam for added comfort, while the breathable polyester fabric cover helps keep you cool and comfortable, even on warm days Move with Confidence: Crafted for peace of mind, this active balance stool combines a heavy-duty 264 lb weight capacity with a floor-gripping rubber base that stays firmly in place during your active sitting sessions Quick Assembly: Simply snap the pole into the base and seat with no tools needed, so you can start enjoying your adjustable stool in minutes