Convenient procedures, products and services are those intended to increase ease in accessibility, save resources (such as time, effort and energy) and decrease frustration. Convenience is a relative concept, and depends on context. For example, automobiles were once considered a convenience, yet today are regarded as a normal part of life.Service conveniences are those that save shoppers time or effort, and includes variables such as credit availability and extended store hours. Service convenience pertains to the facilitation of selling both goods and services, and combinations of the two.Convenience goods are widely distributed products that "require minimal time and physical and mental effort to purchase."