CONTINUOUS SWEATING - Waist training device links the thighs, drives the waist and hips, increases thigh fat consumption, gets rid of fat on the inner thighs and waist, makes the legs and waist look slimmer. HIGH-QULITY MATERIALS - Made of 80% Neoprene+20% Nylon ,Flexible and Durable, Easy to clean. maintains the body posture continuously. The waist belt has a non-slip mesh inner surface to prevent the thigh support from sliding during exercise. WAIST TRAINER REMIND - Please measure waistline and thigh, and read SIZE CHART. The Waist Trimmer run SMALL, Please order a size up if you are between 2 size. 2. The new product will smell a bit, it is recommended to use after cleaning, pls use it with confidence.