The waist trainer belt is smooth comfortable and highly elastic, not easy to wrinkle or deform it can be worn inside or outside to increase your core temperature during exercise without irritating your skin the neoprene fabric trimmer belt makes you sweat 3 times more than usual  to accelerate calorie burning process,keeps your muscles warm and supported, and prevents post-workout fatigue and injures 5 steel bones prevent the sweat waist trainer corset from rolling down or shifting
fabric: POLYESTER+NYLON+NEOPRENE