Features: - Wobble design with swivelling and 5-degree tilting, encourages constant movement, fostering an active sitting experience - Backless structure aids in maintaining an upright posture, reducing back pain - Height adjusts with dual side buttons, accommodating both seated and standing desks - Mesh fabric allows airflow, preventing overheating during long work hours - Seat cushioned with high-density foam, offering tailored support and relief - Anti-slip base paired with a stable gas lift, ensuring safety and durability - Assembly is tool-free, simply connecting pole to base and seat swiftly Specification: - Color: Black - Material: Mesh Fabric (Polyester), Shaped Foam, PP - Overall Dimensions: 16.7"W x 14"D x 22.2"-28.1"H - Seat Size: 16.1"W x 13.8"D - Seat Thickness: 1.8" - Base Dimension: 15.2" Dia. - Max Load: 265 lbs. Package Includes: - 1 x Wobble Chair - 1 x Manual