There was a period of time in my life (about a decade) when I had the perfect pair of underwear. Luckily they were a style repeated again and again by a large brand so over time, they became the only underwear I bought and eventually, they were the only underwear I owned, aside from the odd pair here and there purchased for a specific outfit.
I loved this underwear because they were extremely lightweight and breathable. They were made from a soft nylon microfibre that was durable but also a little sheer. They had a slight boy-leg that was edged with very thin lace, so they were both sporty and pretty. They had a moderate amount of coverage across the back and were so well cut they left no visible panty lines.