Rubberized base keeps chair from slipping causing dangerous falls. Suitable for kids aged 5 to 16 years (Kindergarten to High School). Tamper proof connectors prevents the chair from being disassembled. Connectors included allow for selectable heights: 12, 14, 16, or 18 in. Specially designed base inhibits students from spinning on the chair. Sloped base, forces student to sit with two feet on the ground. Integrated carry handles. Soft foam seat for all day comfort. Wipes clean with a damp cloth.