Seamlessly Switch between Cold and Heat for Smartere Post Workout Recovery - Introducing BOB AND BRAD C2 Pro massage gun, our portable, compact device that seamlessly combines cold therapy and heat therapy. Choose between 2 optimized presets for fast and precise temperature control and targeted pain relief. Whether used for surgery recovery or sports injury, Cold therapy helps support sore muscles and joints.Heat therapy helps combat the soreness that stops you from feeling your best.