vive foot rocker - calf stretcher for achilles tendinitis, heel, feet, shin splint, plantar fasciitis pain relief - stretches strained leg muscle - ankle wedge stretch improves flexibility vive foot rocker by vive safely and effectively stretch each foot, calf and ankle with the vive foot rocker. ergonomically designed to promote proper foot posture, the foot stretcher gently and evenly stretches the foot to relieve foot pain, reduce fatigue and increase circulation and flexibility. the foot rocker can be used for feet of any size.