This ultimate fidget buster is a pedal desk and stability ball chair in one! The included 40 cm stability ball improves posture and strengthens core muscles while pedals incorporate subtle activity for better concentration. Single-pulley pedal system limits resistance to prevent distraction. Desktop adjusts 34" to 37"H and seat adjusts from 30” to 33”H, both in 1” increments. As the seat adjusts vertically, it moves a total of 3-3/4” away from desktop. Large 18-1/2” x 24" desktop includes a water bottle holder, pencil tray, and storage box for extra books or gear. Our premium SmartStudy line features black powder-coated steel construction and a quality melamine desktop that look professional in any setting and last for years. Tip and roll wheels make transportation around the room a breeze for a truly dynamic learning space. Desk is designed for elementary students 5'H and under. Supports up to 150 lb. Footprint is 32"L x 26"W. 63 lb.