I just re-gripped my putter with a new Champ Sports C1 Putter Grip.
The material in the grip is very soft and has a nice tacky-but-not-sticky feel. It’s also quite a bit larger than my previous grip, which Champ says should stabilize my stroke and minimize wrist movement. That works for me because I use a shoulder rocking movement in my putter stroke.
A full review is coming after a few rounds.