Walmart, Amazon and ShopRite are three retailers that sell Mallomars. The Nabisco cookies are seasonal and only sold online and in stores between September and March.
Over 80 percent of Mallomars are sold in the northeastern United States, and many western and midwestern retailers don't carry them even when they're in season. Online retailers such as Walmart and Amazon ship them throughout the United States, but only between September and March.
Nabisco, the retailer of Mallomars, originally sold them as a seasonal product starting in 1913 due to a lack of refrigerated trucking. The cookies, which consist of graham crackers and marshmallows covered in chocolate, would have melted during shipping if sold in summer months. Though refrigerated trucking is now available, the company continues the tradition of seasonal sales.