A thong with a wide waistband
Short answer: A wide waistband on a thong spreads the pressure over a larger area and therefore cuts in less than a narrow string. In return it shows more clearly under tight clothes.
Wide rather than narrow
A wide elastic lies flat against the skin instead of cutting in. That makes it more comfortable to wear all day.
Visibility
A wide waistband shows through tight fabric more clearly than a narrow string. That is the trade-off.
Under tight clothes
If nothing must show, a seamless model with a thin edge is the closest you get. See seamless knickers.
Comfort over time
For long days most people choose the wide waistband. See bamboo thong.
See the range
See the models in bamboo knickers.
Size
A thong that is too small cuts in whatever the width of the waistband. See the size guide.
Washing
40 degrees without fabric softener and without a tumble dryer. See the washing guide.
When the model makes sense
A thong is typically worn under tight trousers and dresses, where every other edge shows. For everyday wear most people choose a model that covers more. See bamboo underwear for women.
Frequently asked questions
Is a wide waistband more comfortable?
For most people yes. The pressure is spread over a larger area.
Does it show more clearly?
Yes, under tight fabric. That is the trade-off against comfort.
What if it cuts in?
Then the size is too small, whatever the width of the waistband.