@miramira@is.nota.live honestly, the kn-95s are well-ventilated and don't get as humid as traditional fabric. They are not cute, though.

Otherwise, you likely want one made out of athleticwear fabric. It'll be ineffective for filtering, but so long as that's not the point, it's no trouble. I'd look for single layer masks from knit fabrics, particularly synthetics. Alternatively, maybe a translucent silk scarf-style one from sissilita on etsy? https://www.etsy.com/listing/855107145/100-mulberry-silk-scarf-mask-with-filter

You might also like https://www.lpmlolita.com/ but I think her site is down right now.