Sales promotion is one of the five aspects of the promotional mix. (The other 4 parts of the promotional mix are advertising, personal selling, direct marketing and publicity/public relations.) Media and non-media marketing communication are employed for a pre-determined, limited time to increase consumer demand, stimulate market demand or improve product availability. Examples include contests, coupons, freebies, loss leaders, point of purchase displays, premiums, prizes, product samples, and rebates.