Curvvvy™ Adjustable Thermal Waist Trainer Tank TopZip, Clip & Wrap Secure Fit Designed with a sturdy front zipper, secure top clip, and adjustable Velcro wrap for a fully customizable fit. The U shape cut enhances your bust line, while silicone grip keeps the vest from rolling up or shifting. Instant Sweat Boosting Effect The heat trapping inner sauna layer helps increase sweat up to 5X during workouts. Targets stubborn belly and lower back areas while supporting better posture. Sculpt, Support &