My Belly Burner Belts are anatomically engineered with Thermacore material including a tapered edge for a contoured fit and better comfort. The patented neoprene cell fabric creates a sauna effect around the mid-section and helps increase your metabolism. It's designed to provide back support and assist in weight loss. Works with all activities, such as: Walking, Jogging, Biking, Exercising and other daily activities. You can wear the My Belly Burner Belt under or over your shirt. For best results, wear for a minimum of 15 minutes while being physically active. The warming effect will be felt after the first 15 minutes (that's when your metabolic rate increases, and you begin to burn more calories) and will continue throughout the workout. Our well-being philosophy is all about fitness and healthy living consciousness, that is attainable, delivers consistent results and is everyday empowering. When you purchase My Belly Burner products, you will also receive information in your box with information on how to get free access to different types of workouts and healthy meal recipes from our very own personal trainers. After using My Belly Burner Belt, there are a few simple steps to keeping it clean. The Belly Burner will be wet from your body's perspiration when you take it off. Run it under water and lay it out to dry. If you're using the My Belly Burner every day, plan to hand-wash it once a week. Do NOT put your Belly Burner in the dryer. Warning: Do not use if you are allergic to neoprene or acetate. Do not use if you are pregnant or trying to become pregnant.