A package tour, package vacation, or package holiday comprises transport and accommodation advertised and sold together by a vendor known as a tour operator. Other services may be provided such a rental car, activities or outings during the holiday. Transport can be via charter airline to a foreign country, and may also include travel between areas as part of the holiday. Package holidays are a form of product bundling. Package holidays are organized by a tour operator and sold to a consumer by a travel agent. Some travel agents are employees of tour operators, others are independent.