Wobble chair active learning stool lets children rock and swivel in all directions so they can move while staying seated at a desk or table. The backless, octagonal seat encourages upright posture and engages core muscles for a stronger, more stable back. A 16.5-24-in adjustable height range suits children over age 7, so one stool can follow them as they grow. The PP silicone construction, 13 x 13 in base and embossed bottom create a steady structure that helps maintain friction and comfort as kids shift and fidget.