This is as opaque as I've found.  The only things keeping them from 5 stars for me are fairly inconsequential - what seems like a high waist, esp in proportion to the length from crotch to foot (also pretty snug across the waist, and I do not have a large waist), and a less-than-perfect fit at the instep when worn as footed tight.  It's not the fit you would get with a ballet-style, transitional tight, but I wear mine with boots anyway, so...........  The material feels very nice.  Absolutely recommended.