A G-string is a very narrow style of underwear or swimsuit characterized by minimal rear coverage: a small front panel connected to a waistband with a single thin strap or cord that passes between the buttocks. Materials range from natural fabrics to synthetic and decorative options; leather, cloth, and plastic are common choices (leather, plastic). Versions are made for all genders and for purposes that include daily wear, swimwear, and performance costume.

Design and distinguishing features. Unlike broader styles such as full briefs or bikini bottoms, a G-string reduces visible lines beneath clothing and provides minimal coverage. The defining element is the narrow back strap that resembles a "string." A thong typically has a bit more fabric in the posterior triangular portion, while a G-string uses the least material possible. The narrow strap design also alters how the garment fits and moves with the body.

History and development. Minimal rear-coverage garments have ancient precedents in loincloths and regional dress. The modern G-string emerged in the 20th century as lingerie and beach fashions evolved; it gained wider visibility with the popularity of tanning, tight-fitting clothes, and fashion trends that favored invisible undergarments. The style diversified into many variations for aesthetic, practical, and cultural reasons.

Uses and cultural notes. G-strings are worn as everyday underwear, as swimwear (often under restricted local laws), for sunbathing to avoid tan lines, and in dance and performance contexts. Some people prefer them for comfort or minimal coverage; others choose them for erotic or fashion reasons. Legal and social attitudes toward very minimal swimwear vary by location and setting, so context matters (swimwear, underwear).

Variants and practical considerations

  • V-string and T-string: names describing the shape of the rear straps or how they meet the waistband.
  • C-string: a strapless variant that clamps to the body and is held in place without a waistband.
  • Men's styles: designed with a pouch in front and a narrow rear strap, adapted for anatomy and support.

Care, comfort, and hygiene. Because of their minimal construction, fit is crucial—poorly fitting garments can cause chafing or discomfort. Natural fibers like cotton are recommended when breathability is a priority; stretch fabrics and microfiber blends add comfort and shape retention. Regular laundering, correct sizing, and attention to fabric choice help reduce irritation and maintain longevity.

For further reading about materials and variations, see resources on fabrics and swimwear design (materials, synthetics, anatomical fit, beachwear, everyday underwear).