A knob sleeve assembly for a ball bat extending along a longitudinal axis and having a tubular handle portion and a knob attached the handle portion. The knob sleeve assembly includes a plurality of annular bodies formed of a resilient material. Each of the bodies defines a central opening for receiving the handle portion of the bat. Each of the bodies has an annular body height within the range of 0.25 to 1.0 inch, and a maximum annular body outer diameter within the range of 1 to 3 inches. The plurality of annular bodies varies from one another according to at least one annular body characteristic. The knob sleeve characteristic is selected from the group consisting of annular body height, maximum annular body outer diameter, weight, color, material durometer value, annular body draft angle and combinations thereof.