RELIEF FOR PAINFUL LEGS AND FEET. By gently stretching your foot and leg, the Foot Rocker helps relieve the pain associated with plantar fasciitis, achilles tendonitis, ankle strain, arch pain, and even lower back pain. Developed by sports professionals, Foot Rocker improves flexibility, helps prevent foot injuries and works every muscle in your leg. Includes exercise guide. Durable plastic. 11”Lx6”Hx4”W.