A bin bag, swag sack or bin liner (British English

British English

British English, or English , is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere...

) or garbage bag, trash bag, refuse sack, black sack, or can liner (American English

American English

American English is a set of dialects of the English language used mostly in the United States. Approximately two-thirds of the world's native speakers of English live in the United States....

) is a disposable bag used to contain rubbish

Waste

Waste is unwanted or useless materials. In biology, waste is any of the many unwanted substances or toxins that are expelled from living organisms, metabolic waste; such as urea, sweat or feces. Litter is waste which has been disposed of improperly...

. Such bags are useful to line the insides of waste container

Waste container

A waste container is a container for temporarily storing refuse and waste. Different terms are in use, depending on the language area, the design and material and the respective site .The most general terms are waste receptacle and container bin.Common terms include dustbin ,...

s to prevent the insides of the receptacle from becoming coated in waste material. Most bags these days are made out of plastic

Plastic

A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

, and are typically green or black in colour.

Plastic bags are a convenient and sanitary way of handling garbage, and are widely used.