I think mine might be...I bought the size B (jonathan aston) backseam ones, because size A said it was upto height 5'4" and that's what I am so thought the B would be best.
Anyway the holes seem fairly small (they're not micronet!) and I'm getting that horrible uneven 'shadowing' - unless that is just a thing that fishnets do??
Not used to wearing these things, as you can probably tell!