Reese's Peanut Butter Cups are an American candy by the Hershey Company consisting of a peanut butter filling encased in chocolate. Reese's is a top-selling candy brand worldwide, with $3.1 billion in annual revenue. In the United States, Reese's Peanut Butter Cups typically come in packs of 2, 4, 5, 10, or 20 in distinctive orange packaging, set on thin but rigid paperboard trays.

Source: Wikipedia