[Versatile Foam Roller] Our foam for back pain offers a dynamic combination of pressure and vibration massage, perfect for pre and post-fitness routines, exercises, and reducing stiffness. It's a versatile tool designed for exercise, massage, yoga, pilates, physical therapy, and all-around fitness workouts [5 Vibration Intensity] Experience tailored muscle relief with our vibrating foam roller's 5 powerful vibration intensity settings, featuring frequency conversion technology. Whether you're targeting specific muscle groups or engaging in physical therapy, adjust the speeds from 1500RPM to 3200RPM to meet your needs [3-in-1 Density Design] The muscle roller boasts 3 density wave patterns —— high, medium, and low density water ripples. Making it a versatile choice for targeting various muscle groups, including shoulders, arms, neck, legs, back, feet, buttocks, and thighs. The foam roller for back also perfect as a gift for someone in need [Convenient USB-C Charging] With a built-in USB-C charging port, this back roller ensures lasting performance and easy charging. It fully charges in just 5 hours, providing over 2 hours of use per charge on the highest speed setting, so you can stay focused on your workout without interruption [Easy to Carry] Our fsa foam roller for muscle massage is compact, measuring 11.4x4.7 inches with weighs only 3lbs, making it ideal for on-the-go muscle massage therapy. Whether you're hitting the gym, traveling, or winding down after a workout, it's the perfect companion for your fitness journey. (FSA / HSA eligible)