Grip Puppies. They do slip over your grips with a little effort. They also have oversized grips you can buy. I have them on my 2020 Rocket and they do work with the heated grips very well and my hands don't get numb or fall asleep like they use to after 50 or so miles. To me a great investment and I will never be without them. They seriously helped my comfort and also a little less vibration in the hands. Well worth the money and they are so cheap if you don't like them cut them off. The only drawback would be a larger profile for your hands but I got use to it quickly. Just my findings though.