Designed by a physical therapist, this unique massager provides much-needed relief to those with plantar fasciitis, heel spurs and sore feet. The secret is the innovative shape and knobby texture. Slowly roll your feet over the sphere for a deep tissue massage, applying pressure where you need it to relieve arch and heel pain and to get effective plantar fasciitis treatment. Warm up or chill the massager for soothing hot / cold therapy.