Twilltape.com

I bought a couple rolls of their heavyweight .5". It's still a bit lighterweight than Newbaums and it doesn't have an adhesive. What I've been doing is putting a few strategic strips of double-sided tape down before wrapping with this. If I place the tape correctly where I typically grip, it seems to keep the tape from migrating much. Although I do ride with a pretty light grip, never understood the people who twist the snot out of bars.