The Balance Cushion Sensory Seat helps kids release excess energy through silent movement, promoting focus, calm, and improved posture. Its curved base allows gentle rocking and wiggling, while textured dimples provide soothing sensory input. Ideal for children aged 3 and up. No assembly is required for the 34 cm (13-1/2") diameter seat, which can be easily used on school chairs or the floor. A free hand pump is included for easy adjustments.