Gaiam Balance Disc Wobble Cushion Stability Core Trainer for Home or Office Desk Chair & Kids Alternative Classroom Sensory Wiggle Seat

Active seating: Place the disc on top of almost any chair or seat to add instability to strengthen your core while improving posture and sitting comfortably - great for office desk chairs. Versatile cushion: Use balance disc with a variety of strength and balance exercises, in or out of a chair, to increase core strength and balance. Meditation cushion: Works great as meditation seat or wherever you need a little extra cushion - also effective as a 'chill chair' for young children and active kids. Alternative seat for active kids: Great for classroom aged children at home or in the classroom as an outlet for hyper or ADHD kids allowing them to release excess energy while staying engaged and focused longer. Dimensions: Measures 16 inch diameter