IQTCK Brands 6-Pair Work & Athletic Casual Crew Socks with Dry IQ Technology For Men & Women

I am a female that wears a size 6.5 shoe. what size should i purchase in these socks? i see they are offered in small, medium and large. thank you.

I'm looking for a light weight sock to wear for work outdoors in the summer heat & humidity. How would this sock be for that?

Is it normal for them to wear out after less than two months?

are the tops tight and leave a mark ?