The legislation summarizes key aspects of sales promotion legislation in Mexico. The Federal Consumer Protection Act regulates purchase-sale relations and derived specific laws and regulations governing promotions and offers. The law defines promotion as offering additional goods or services free or at reduced price with an incentive to participate in events. Promotion also includes offering more content in a product's usual presentation for free or reduced price, or two or more equal or diverse products for a single price. The relevant articles governing promotions are contained in the advertising and guarantees chapter and are Articles 15, 16, 17, and 18.