1. Smooth and comfortable milk silk fabric, very light and flexible, suitable for any figure. Lightweight and stretchy fabric allows you to move freely during exercise. 2. The inner layer is made of intelligent heating fabric, which can increase body temperature, create strong sweat, stimulate sweat up to 3 times, help accelerate calorie burning, help fast exercise and reduce weight. 3. The outer layer is made of breathable fabric to keep the outside dry, promote skin breathing, and will not feel tired after long exercise. 4. The shapewear tightens and smooths your abdomen, trims and smooths your waistline, and the strong pressure makes you straighten your waist. 5. The zipper design is easy to put on and take off, and the bottom hem is designed with elastic bands to prevent slippage. It can be worn not only during exercise, but also daily. It has no peculiar smell, no deformation, and more comfortable to use. Specification: Condition:100 Brand New Item Type: Sauna Vest Applicable Scenarios: Running, fitness, yoga, skipping rope, hoop, aerobics Function: Universal in all seasons, strong body shaping, double-layer reduce abdomen, tummy tightening, chest support Size Waist Bust Length S M 70cm 27.6in 80cm 31.5in 54cm 21.3in L XL 84cm 33.1in 94cm 37in 57cm 22.4in 2XL 3XL 110cm 43.3in 110cm 43.3in 60cm 23.6in Package List: 1 xSauna Vest Note: The measurement method is flat manual measurement, there is an error of 1-3cm, which is purely normal and does not affect normal use.Product Features: The outer layer is made of breathable fabric to keep the outside dry and promote skin breathing, so you won't feel tired after -term exercise. Smart heating: Waist trainer vest have the inner layer uses smart heating fabrics, which can increase body temperature, produce strong sweat, promote perspiration up to 3 times, help accelerate fat burning, help fast exercise and reduce weight. High quality fabric: smooth and comfortable milk silk fabric, very light and flexible, suitable for every figure. Light and stretchy material allows you to move freely during training. Ladies sauna effect suit waist trainer vest, can help burn more calories while exercising or jogging. High Quality FabricSlimming training vest. This fitness training vest is made of elastic and smooth neoprene, and is designed with ventilation holes, which is very breathable and maximizes comfort. This means it is easy to clean, fits your body, and will not tilt or irritate your skin. The inner layer is made of intelligent heating fabric, which can increase body temperature, create strong sweat, stimulate sweat up to 3 times, help accelerate calorie burning, help fast exercise and reduce weight.