TheraBand Mini Ball, Small Exercise Ball for Yoga, Pilates, Abdominal Workouts, Shoulder Therapy, Core Strengthening, At-Home Gym & Physical Therapy Tool Price: $24.99 (as of 18/02/2020 23:04 PST- Details)

Add an extra dimension of balance or resistance to your workout routine when positioned between your arms or legs or between you & the floor or wall
Non-slip when placed against a hard surface
Suitable for all ages