本機

Pongee is a soft, lightweight, naturally tan silk fabric. The word entered English from Chinese, likely from the Mandarin běnjī (本機), meaning 'own loom' or 'home loom'—referring to silk woven on domestic hand looms rather than industrial ones. Some linguists trace it instead to a dialectal Chinese word meaning 'natural color.' The precise origin is uncertain because European traders transliterated the word inconsistently across multiple Chinese dialects.

Pongee silk was produced primarily in Shantung (Shandong) province, where wild silkworms fed on oak leaves rather than mulberry. The resulting silk was coarser and more textured than cultivated mulberry silk, with a natural golden-brown color. European and American buyers prized it for its organic texture and its affordability—pongee was real silk that cost less than the glossy white variety.

In the late 19th and early 20th centuries, pongee became a popular fabric for men's summer suits and women's dresses in America and Britain. The natural tan color required no dye. The lightweight weave breathed well in heat. Theodore Roosevelt was photographed wearing a pongee suit. It was the linen suit's silk cousin—appropriate for warm weather but with more body.

Pongee's popularity declined after World War II as synthetic fabrics offered cheaper alternatives to summer silks. The word survives in textile dictionaries and in the vocabulary of silk specialists, but most people today have never heard it. The fabric from home looms in Shandong that once dressed American presidents now exists mainly in vintage clothing shops.