Children can move while sitting, releasing pent up fidgety energy improving concentration. FOCUS: Children can get the wiggles out as the constant movement while sitting increases blood flow to the brain improving attentiveness ACTIVE LEARNING: Supports the body's natural need to move while sitting at a desk or table, in the Quiet Corner or at circle time CALMS: Reduces the need to fidget and alleviates anxiety, stress and boredom. Builds core strength and a healthy posture VERSATILE & EFFECTIVE: Keeps balls suspended in place when not in use yet light and simple to move and transport. Bases can be stacked for easy storage PORTABLE & SIMPLE TO STORE: Versatile, lightweight, and easy to carry. Removable feet for easy storage RECOMMENDED USER HEIGHT: Designed for users up to 5' tall. Sitting height is 20" INCLUDES: A circular base, removable 38cm exercise ball, foot pump, Phillips screwdriver, 2 stoppers and measuring tape Sitting height 20" Max weight 200 lb Safety tested