When I think back to school days when we wore nylon knickers, sometimes for a couple of days on the trot, .... Oh boy, makes me shudder. If they had at least been cotton! Nowadays I wouldn't wear any kind other than cotton, and will change them during the day if they get sweaty. I do have a couple of microfibre ones, but only for travelling, and only the very soft microfibre. Not the shiny kind - If I touch any of that kind in the shop, they feel so awful, I have to wipe my hands.
Where were we? Oh yes, those knickers in the link yogagran posted - what's so granny about them? Or have I become so distanced from the world of the 16-year-old that I hadn't realised that that's what they think?
In the 60s I was a Saturday girl in the lingerie department. Thongs hadn't been invented then, but we had all sorts of interesting things such as French knickers, various lacy (but not racy) creations, and even those directoire knickers in that germolene colour. As far as I remember, no one EVER bought any directoire knickers, which were hidden away in a drawer. So even then, perhaps grannies were hipper than expected.