Does the p.ball fit all sizes? Vincent February 19, 2021 19:48 Updated Follow The p.ball comes in one size with a 5.7” extension strap. We also offer additional extensions to fit a variety of body types as well as a 7” extender when requested. Related articles About our p.ball About our p.band When should I use the longer and shorter bands? What are the benefits and expected results from using the p.3? Where do you ship to? Comments 0 comments Article is closed for comments.