Flyers are a standard method of marketing and should be one of the staples in your marketing efforts. They can range from high-quality full-colour sell sheets to simple single-colour handouts. They fit any budget and can be valuable sales tools. Effective flyers generally contain less information than brochures and are often more direct and persuasive in content.
Flyers are generally designed to fill the whole page and can be single-sided or double-sided. They are sometimes folded (often for mailing), but they aren't always.