Powerful. Ideal for travel, TSA-approved carry-on luggage pinpoints your tightest areas to help you move better everywhere. Take it with you wherever you go. This is a massage ball that fits in the palm of your hand. With three vibration speeds (low, medium, and high), you can roll it wherever you need relaxation on your muscles. Compact and powerful. Compact, textured, and vibrating, this is an affordable, travel-friendly massage ball trusted by fitness enthusiasts. Great for stretching after a workout and perfect for long days of sitting during the workday. Mobility Vol. Improve mobility by relaxing muscles, tendons, and joints before and after exercise. after exercise 3 vibration speeds, 2 hours battery life, 1 lb.