Wobble Stool: Active learning chair that supports the body’s natural need for movement, engages your core and helps develop good posture; fun seating option for dynamic learning environments Flexible Seating: Quickly rearrange workspaces to promote teamwork and collaboration in classrooms, libraries, offices or at home; circle up for discussions or pair with student activity tables Lightweight and Portable: Durable plastic chairs are lightweight making it easy to inspire learning in any environment; add movement throughout the day while making seated tasks more engaging Certified Safe: GREENGUARD [GOLD] Certified for low VOCs, CPSIA compliant, and meets the requirements of ANSI/BIFMA X6.1 Educational Seating sections 8 and 10 Product Dimensions: 13” L × 13″ W × 18” H; one-piece design comes fully assembled and is maintenance-free