The answer is "rim protector."
We are at a critical moment in the history of "rim protection." It's an overblown, increasingly vague, over-cited concept, like "three-and-D" and "stretch-four" that turns into a box people somehow think has to be checked in order for a team to be good. The life cycle goes from catch-phrase to fad to conventional wisdom to joke. It's peaking conventional wisdom now.