Promotional merchandise is products branded with a logo or slogan and distributed at little or no cost to promote a brand, corporate identity, or event. Such products, which are often informally called swag, or freebies, are used in marketing and sales. They are given away or sold at a loss to promote a company, corporate image, brand, or event. They are often distributed as handouts at trade shows, at conferences, on sales calls (that is, visits to companies that are purchasing or might purchase), and as bonus items in shipped orders. They are often used in guerrilla marketing campaigns.