Abstract: The v-shaped cardboard structure add-on for existing toilet paper rolls combines two unusual systems into one creating a better product that is beneficial for companies and consumers. The first system in the v-shaped cardboard structure add-on for existing toilet paper rolls is a physical control (utilitarian) system function that stops the excessive unrolling of toilet paper. The second is a combined product delivery and marketing system (including advertising) that allows companies to reach their target markets in the most unexpected of ways. The v-shaped cardboard structure add-on for existing toilet paper rolls comprises of a wing and a pouch. The wing comprises of a plurality of perforated lines and a plurality of faces. The wing is folded in a v-like shape and is able to fit into a standardized core of a toilet paper.