Sportime Stabili-T-Stool Tube is no ordinary seat! From fidgters to those with special needs, this intentionally unstable design offers a dynamic base of support for the body, making it an excellent choice for therapy, classroom, or core balance training. Use for classrooms, clinics, home, inside and outside. Durable plastic tube is wipe down, clean, and sanitize after every use. The Stabili-T-Stoll Tube is built for use on carpeted floors or non-skid surfaces only. Colors vary (sorry no color choice.) Stool measures 15 inches high with a circular seat.