I picked up the RecoveryTherm Back Refurbished and it has been a great addition for my lower back. The heat plus targeted vibration really helps when my back tightens up after long days at a desk. It's easy to wear while moving around, and I notice better mobility after each session. The refurbished unit works exactly as described and feels like a solid value. I use it mainly for muscle tweaks and everyday back pain, and it delivers consistent relief without any fuss.