BRACOO, Adjustable Waist Trimmer Belt, One Size, Black, NEW! Raises the body temperature in the abdominal area to help optimize metabolism and burn off extra calories during exercises Uniform compressions exerted on the entire core area to protect the abdominal and lower back muscles from fatigue and strain Professionally engineered to retain body heat in the waist area to remove excess water weight during exercise and prevent heat stroke High-quality 7.5 x 37" belt fits up to 40" in waist size; Velcro closure is easily adjustable and accommodates users with different needs Look for our authorized retailer: Amazon Inc., Comfytopia, Chang Enterprise