The Sitness X Stool 20 brings movement to sitting: Its oval-shaped seat surface promotes active, dynamic sitting and encourages micro-movements. As a patented sitting/standing aid, it supports both sitting and semi-standing positions - ideal for changing learning and play phases. The innovative, patented sole made of segmented TPU (thermoplastic material) enables elastic, controlled movements in all directions. This continuously trains the back muscles and effectively prevents one-sided posture. The stool is designed for children up to 1.59 m tall and 60 kg user weight. Lightweight, robust and intuitive to use, the Sitness X Stool 20 improves concentration through active sitting dynamics and supports a healthy posture in the children's room, homeschooling set-up or creative area. Move smart - with ergonomic movement that is fun.