Many boxers, jockeys, bullfighters, football players and other athletes have been usinq heat saunas for years Vibra+ Sauna Belt offers many of the benefits of the traditional heat Sauna, but has one big advantage; you can enjoy Sauna heat in the comfort of your own home In addition, you can focus the sauna heat on those body ports that need it most. This portable sauna is great for abdomen, waist, back and hips. Before placing the Vibra + Sauna Belt on your skin, make sure you are in a comfortable position either lying down or standing up. However do not use the Vibra+ Sauna Belt if you are lying on your stomach or sitting down, as this could cause problems in the device's electrical circuit. Do not use any kind of skin cream or similar product while using the Vibra + Sauna Belt, as your skin pores will not be fully open and skin cream could cause an allergic reaction. Do not use the Vibra + Sauna Belt immediately after meals; wait for at least two hours after eating. It is important to use the Vibra + Sauna Belt at room temperature and not in the air conditioned room. The sudden changes in temperatures couId be harmful for your body. For best results, you should use the Vibra + Sauna Belt for a maximum of 50 minutes at a time. Do not exceed 50 minutes. Do not use the Vibra + Sauna Belt for a period of more than 45 days, wait for a week before using it again TECHNICAL SPECIFICATIONS Supply: AC 230V / 50-60Hz Loading Power: Approx 55W Temperature Range. 34oC ~ 75oC [adjustable] IMPORTANT Reduction in size does not depend on the amount you sweat. You can achieve it thanks to the localized heat emitted by the Sauna Slim Belt in the area treated during each session. Some people perspire more than others, depending on the constitution of skin type.