An American brand of potato-based chips first introduced in 1967 by the company Procter & Gamble. They are produced in a uniform stackable "saddle" shape and sold in tubes instead of bags.
Unlike normal potato chips which are created using slices of potato, Pringles are created from a dough made from potato flakes that are shaped and fried. Legally in the United States they are not considered potato chips because of this, but are instead legally labeled as a crisp (not to be confused with the UK term which refers to chips, and where they use the legal label of chip instead of crisp).
On Danbooru, used to refer to any Pringle-style chip, unless another brand is shown, such as the Japanese brand of stackable potato chips known as Chip Star.