Why? They are the right size. I have average feet, no sharp nails.
Without fail all my thick winter tights get holes where the big toe is.
It's bad enough playing around with the toe seam so it doesn't drive me to distraction, but a hole finishes me off.
I am no sock darner so as soon as I sew it up it then becomes and even weaker spot.
Actually maybe it is because I am moving the seam? It annoys me.
Today I am wearing my 180 Denier Thermal Heatgen Plus winky wanky woo ones and they've got a hole in the big toe.