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.
Shopping for underwear may seem like a necessary evil: it's something you know you have to do, but with so many styles and fabrics to choose from it can feel overwhelming (to say the least). You need to find something that feels comfortable, stays in place, isn't visible under clothes, and won't break the bank. And most importantly, it needs to be hygienic.
Luisana Mendoza de Roccia, co-founder of Maisonette, calls the brand Negative Underwear her “no-fuss underwear solution.” She says all of the styles are sleek and lay smoothly on the body, and that she can feel confident that they’ll stay in place during the day. “For the daytime, I’ll go for the cotton briefs, and for evening affairs where I want to feel a bit more luxe, I’ll pull out the silky briefs,” de Roccia told us. “Plus they’re made by women for women, so you can’t go wrong.”

Some names for the thong reference the bareness of the buttocks, as seen in the Spanish word colaless (the origin is probably connected to the term topless but in reference to cola, colloquial term for butt in South American Spanish), and in other names the "T"-like shape of the back is highlighted. In Chinese, the T-back is commonly called dingziku (丁字褲/丁字裤) which literally means 丁 character pants (or roughly, T-letter pants). In Korean, it is called 티팬티 (T panty). However, there are several usages of the term T-back in English as well (e.g., children's literature author E. L. Konigsburg's T-backs, T-shirts, Coat and Suit).

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.”
There are many other varieties of fundoshi as the variations on the principle of a loincloth are almost infinite. For example, the mokko-fundoshi (literally "earth-basket loincloth" because it looks like the traditional baskets used in construction) is made like the etchyuu-fundoshi but without a front apron; the cloth is secured to the belt to make a bikini effect. The kuro-neko fundoshi (literally "black cat fundoshi") is like the mokko-fundoshi except that the portion that passes from front to back is tailored to create a thong effect.
Try thongs made from different fabrics. Not all thongs are made alike. Just like regular panties, there are a plethora of fabrics, colors, and patterns to choose from. When it comes to thongs, it is generally recommended that you look for thongs made of cotton, as these are the most breathable. However, lace, silk, and satin are all common options. Lace thongs work well for minimizing a ‘muffin-top’ over the elastic, as the lace is very stretchy and forgiving in appearance. Silk and satin thongs are typically reserved lingerie-type use, but are certainly an option for those days you want to feel sexier than usual.
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