Fabric resistance bands in 3 levels for working out any parts of the body. Pink~light: The low resistant band is perfect for those who are just starting out. Light grey~medium: The medium resistance band is a great for those who are ready for added resistance to their routines. Black~heavy: The heavy resistance band is the strongest of the three and offers a resistance level perfect for advanced users or athletes. (No rolling or sliding) (Portable for workout at home or anywhere else)