The MSD-Band Resistive Exercise Tubing is a high-quality tubing created by an intensive dipping process. The dipping process guarantees a multi-layered tubing, which ensures a strong and safe training product, while extruded tubings are very susceptible to damage and can easily snap. In general, dipped tubings are even more durable than bands, especially when using it on a coarse surface. MSD-Band Exercise Tubing is available in 100 ft rolls, packed in a great dispenser box. They are available in 6 different resistances.