BALANCE STOOL: the unique seat cushion lets you sway, tip, twist, move, balance and burn calories or sit still without stressing about balancing. A unique, ergonomic active sitting balance ball stool FUN ACTIVE STOOL: Wobble Stool Air is a fun, healthy, adjustable height balance stool. A wobble cushion engages your core for active sitting, dissipating pent up energy & stimulating your creativity ADJUSTABLE HEIGHT ROLLING BALANCE STOOL WITH A SWIVEL SEAT: A rolling balance stool with wheels that conveniently slides into place or out of the way. Seat swivels 360. Adjustable height (19-25.5) ERGONOMIC OFFICE STOOL: Wobble Stool Air is a unique balance stool designed for the modern, active office. Engage your core, move and balance more frequently during the workday for improved health. ELEGANT DESIGN: sleek, simplistic, modern style fits most environments. It’s a fun office stool that’s easy to sit on and quick to get up from. Simple assembly (no tools required) takes seconds