Sankalp Sonkusare discusses various ways to classify products. Consumer products can be divided into durable products, which can be used for a long period of time (e.g. appliances), and non-durable products, which are consumed quickly (e.g. soap). Products can also be classified based on shopping efforts, into convenience products that require little effort to purchase, shopping products that involve comparing options, and speciality products that consumers make special efforts to obtain. Industrial products are used as inputs to make other goods and include materials and parts, capital items, and supplies and business services.