RBX Thermal Waist Slimming Belt & Gel Pack Included to Heat or Freeze (More Colors Available) RBX Waist Slimming Belt traps body heat while compressing fat cells in the body using high-tech synthetic polymer to promote weight loss Heat or Cool Removable Internal Gel Pack - gel pack feature provides relief and repair to the treated area and easily conforms to any part of your body. Perfect for any hard to reach lower back pain Protects the lower back during strength training and conditioning exercises Ships immediately, 100% Satisfaction guarantee, No questions asked Return policy. Customer Service is our top priority.