The best source that I have found:
Women’s Standard Dowel
There is a measuring guide on the site so you can order the correct size.
Grips take a long time to break in. Swinging from the bar and time is the best way to accomplish this, long before using them for skills or routines.
Be sure to also buy (or have) wrist bands.
Feel free to reach out with questions – email@example.com or 509-290-5270. Updated Nb 7/4/21