DOTASI Postpartum Belly Band - Waist Trainer Corset Slimming Cincher The size are all Chinese tag size, kindly recommend choose the bigger size. Material: high quality Nylon and Rubber.Very Breathable fiber,very suitable.Lightweight and breathable. Provides body shaping effect,shrinking waist bellty stomach trimmer,more effectively reshaper your figure. Adjustable velcro closure makes this beely wrap easy to use,and meet users with different needs. Accelerate calories burn off during exercise workout,reduce injure and muscle pain during gym traning.