Designed to be used with activity tables or anywhere active seating is needed. Colorful Resin ACE Stools provide versatile seating options for work or play. ACE stands for ‘Active Core Engagement.’ Stools encourage proper posture while strengthening core muscles. Kids and adults can rock 360° to work out their wiggles with the innovative design that is tip-resistant. The lightweight polypropylene stool comes fully assembled. The ACE Stool meets or exceeds all applicable test requirements from ANSI/BIFMA X6.1-2012 American National Standard for Office and Institutional Furnishings - Educational seating - Tests.