For your set of PowerGrip Pads please reach out to us at www.powerx5solutions.com - Better Grip. Better Results. No Calluses. No Gloves. The technical side of #powergrippads, for those tech-geeks out there: Think of this: The knurled bar is to your skin, as studded snow tires are to snow & ice. Need I say more ? But I will. The technology behind PowerGrip Pads eliminates your concern for, or the need for that knurl on the bar digging into your skin for grip, hence tearing up your skin as well. Try it. Use the PowerGrip Pads on a knurled bar or a smooth bar - no difference at all. Why ? The grip is IN THE PAD ! And to go one step further, studded snow tires are less common out there, why ? Because new technology has provided us with non studded snow tire treads that actually function to grab hold of the snow and ice and improve the grip of the wheel for your driving safety. As a matter of fact, there are laws against studded snows because of what they do to dry pavement once the snow thaws. There should be laws against calluses.