The XDOG Power Band is a state-of-the-art resistance training tool to help maximize power, speed, agility and vertical jump with your dog. The XDOG Power Band offers 6-8 lbs of core building resistance by increasing force and velocity during training. By attaching the XDOG Power Band to the XDOG Vest you now create a variety of resistance in all directions developing powerful and explosive movements. Improve your dog’s acceleration, quickness, and balance with the XDOG Power Band. 6' size stretch.