It depends on your personal preferences and how active you'll be, but below are the main materials you can choose from when it comes to women's underwear. Most fibers are blended with spandex in the fabric to give them stretch and offer the best fit. It's also typical for underwear styles to have a cotton gusset – i.e. the layer of fabric on the inside – regardless of the main fabric. Dr. Dweck says this is especially important to avoid yeast and bacteria growth.

According to the Encyclopedia of Clothing and Fashion, "The G-string, or thong, [is] a panty front with a half- to one-inch strip of fabric at the back that sits between the buttocks",[4] and Knickers: a Brief History says: "Minor tweaks to the cut earned these skimpy panties different titles—from the thong, which has a one-inch strip of fabric down the back, to a G-string, which, as the name equivalent of Spanish suggests (hilo dental), is more like a string of fabric akin between the teeth."[5] Striptease: the Untold History of the Girlie Show says: "The thong [is] an undergarment derived from the stripper's G-string",[6] and according to Americanisms: the Illustrated Book of Words Made in the USA a G-string is "a thong panty consisting of a small triangular piece of fabric supported by two elastic straps. Attributed to strippers circa 1936".[7] The Heinemann English Dictionary defines "thong" as "a pair of underpants or swimming costume in a very skimpy style like a G-string".[8]


“I love Pansy for underwear,” says Alyssa Lau, the founder of sustainability-focused e-retailer New Classics Studios. She calls the California-based ethical underwear company’s pieces “sturdy and beautifully crafted,” and notes that they’re made from organic cotton that’s grown and milled in the U.S. “For me, wearing underwear that’s comfortable, easy to care for, made to last, and crafted with natural fabrics (for the breathability!) is very important,” Lau told us. “Pansy checks all those boxes.”
Model and actress Hari Nef told us that a nude, no-show panty is a must for shoots, where you never know what they’ll put you in. “If it’s a white sheer dress, and you’re in your Hello Kitty underwear, that’s not the look,” she says. Victoria’s Secret No Show “disappear underneath whatever you’re wearing,” according to Nef. “You can wear a body-con dress, and it’s fine. And it’s also not a thong, at least not the way we traditionally think of them. I hate those.”
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