27 CFR 41.72b: b Notice for roll-your-own tobacco.

(a) Product designation. Every package of roll-your-own tobacco, before removal subject to tax, must have adequately imprinted on it, or on a label securely affixed to it, the applicable designation “roll-your-own tobacco”, “cigarette tobacco”, “cigarette wrapper”, “cigar tobacco” or “cigar wrapper”.

(b) Product weight. Before removal subject to tax, roll-your-own tobacco must have a clear statement of the actual weight in pounds and ounces of the product in the package. This statement must be adequately imprinted on, or on a label securely affixed to, the package.