I've heard about these in this community and even tried to find an example on Google. I thought people were joking. Today at work, someone sent me this.
Hit Air - Motorcycle Safety Apparel: Much More Than An Air Vest: BIKEBONE
I bought a set of "Grab On" grip covers at a Harley Shop and put them on my bike. There is still some vibration but it is minimal. Install was pretty easy. I used hairspray instead of soap and water and they went on right over the existing grips without putting up much of a fight. It took awhile...