Men’s Sweat Waist Trainer — Heat-Reflective Polymer Fabric, 4-Hook Adjustable Fit, 7 Spiral Steel Bones Key benefits Increases thermal activity at the waist to boost sweating during workouts — can increase sweat production up to 5× compared with no trainer. Helps intensify the heat and sweating effect around the abdomen. Helps support calorie burn and targeted shaping of the midsection during exercise. Designed to assist in maximizing the effects of workouts and weight-loss routines. Provides immediate waist compression for a slimmer look and supports posture and lower-back comfort while training or during daily activities. What makes it work Heat-reflective silver polymer fabric and silver-coated inner bands raise local waist temperature and promote sweating in the abdominal area. 7 spiral, flexible steel bones reinforce the back, provide firm support and maintain shape without restricting movement. 4 rows of adjustable hook-and-eye closures let you dial in compression and fit for training or all-day use. Features and materials Material: polyester + elastane blend for a lightweight, flexible, and durable construction that resists tearing and deformation. Inner silver-coated layers for enhanced heat retention and sweat generation. 7 spiral steel bones for structural support and posture correction. 4-hook-and-eye adjustable closure for progressive tightening and a secure fit. Designed to be discreet under clothing and suitable for exercise or everyday wear. Performance and fit Compresses the waist to provide a slimmer profile instantly while remaining adjustable to your comfort level. Supports the lower back and encourages improved posture during exercise or long periods of standing. Durable construction maintains shape and performance through repeated training sessions. Practical use scenarios Gym workouts and strength training: wear during core and cardio sessions to increase abdominal heat and sweating, helping you leverage workouts more effectively. Running, hiking, cycling: lightweight and breathable enough to wear during outdoor cardio to promote extra sweating in the midsection. Everyday wear or at work: discreet under clothing to give a slimmer appearance and provide posture support during long shifts or desk work. Care and compatibility Made to fit a range of body shapes by adjusting the 4-hook closure; follow sizing guidance from the seller for best fit. Gentle hand wash recommended to preserve the silver coating and elastic materials; air dry only. What it helps you achieve Increased localized sweating and heat at the waist, added midsection compression, improved posture and back support, and a more defined waistline during exercise and daily use.