When wearing TAME BLACK 9 STEEL BONES LATEX WAIST TRAINER VEST size compression during exercise, the compression stimulates thermal activity in your core which increases perspiration, allowing toxins to escape.IT FEATURES:1. THE FRONT ZIPPER KEEPS A TIGHT FIT AROUND YOUR WAIST TO ACHIEVE THE LONG-LASTING WAIST-CINCHING EFFECT AS YOU LOSE WEIGHT;2. ATTACH A LAYER OF THE BELT FOR FIRM WAIST CONTROL, FLATTEN THE STOMACH AND SLIM YOUR TUMMY;3. ADJUSTABLE STICKER STRAPS FOR EASY ADJUSTMENT AND SECURE CLOSURE AND MAKE SURE THAT THE BELT IS FASTENED TIGHTLY AROUND THE ABS;4. ECO-FRIENDLY LATEX HELPS WITH WEIGHT LOSS AND WAIST SCULPTURING AND SHAPING;5. IF OUT OF STOCK, NEED TO CUSTOMIZE.