Wiktionary
knife roll
n. A set of knives in a leather or similar holster that rolls out flat for use.
Usage examples of "knife roll".
In my buttoned-up chef's coat, check pants, neckerchief and standard-issue leatherette knife roll-up, I arrived determined but full of attitude.
He hunkered down and pulled out his knife roll, its velvet blackness making a darker oblong in the shadows.