Foot Rocker Blue -Optimal Foot Position for Flexibility, Plantar Fasciitis, Achilles tendonitis, and other Chronic Conditions The North American Healthcare Foot Rocker was developed by sports professionals to help you relieve lower body pain quickly, safely, and easily with a rocking stretch. This one-size-fits-all rocker is designed to position your foot optimally, so that you can work and stretch the muscles, tendons, and ligaments of your foot and lower leg by simply following the foot rocker's three, 30-second stretches. This simple device was developed to provide an effective way to relieve the lower body pain associated with plantar fasciitis, Achilles tendonitis, ankle strain, arch pain, and other chronic conditions.