Polymer High-quality material: This ladies sauna sweating vest is made of polymer fabric. The heat-generating polymer fabric can increase natural body temperature and promote sweating during sports. The main outer fabric is made of spandex, which is full of elasticity. Function: The heat-generating polymer fabric of the inner layer of this lady's waist plasticizer increases the core temperature, promotes sweating during exercise, and makes the sweating volume 5 times higher than usual, which helps to burn calories and lose weight. Advantages: Specially designed top performance compression fabrics are used to fit your body curve very well, help you correct your posture, tighten your abdomen, and create a perfect body shape. Occasion: Suitable for fitness, yoga, aerobics, cycling or simple errands and daily wear. It is very light and thin, as if you are not wearing it. It can be worn in a shirt or T-shirt. After-Sales：We are committed to ensuring that you are 100% satisfied. If you have any questions during the use process and are not satisfied with our products or services, please contact us directly by email, we will try our best to provide you with satisfactory and friendly service.