Seneca Smooth 120's Box is a carton of Class-A cigarettes manufactured by the Seneca brand. The 120's format refers to longer-length cigarettes (120mm), and this "Smooth" variety is designed for a milder smoking experience. The box format provides a firmer pack construction compared to soft-pack alternatives.

Each carton contains 10 packs of 20 cigarettes, for a total of 200 cigarettes per carton. Seneca is a value-priced cigarette brand sold at select Costco warehouse locations.