One of the awesome things about being a designer is that sometimes you can get yarn support in yarns that are not available to the public yet. That is also one of the not so awesome things about being a designer - you have to keep it a secret until the yarn is released. Case in point: Knit Picks Curio. I have been wanting to talk about this stuff for like two weeks now, but it is finally released, hooray!
Curio is a #10 crochet thread, in 100% cotton. For you knitters out there, that is a lace weight. I would bet my last biscuit it is mercerized cotton (because it is so smooth and shiny), but the label doesn't say it is. It is smooth, shiny, and has a very tight twist, as crochet thread should so that it doesn't split on itty bitty hooks. It feels a little bit stiff in the ball, but softens beautifully on washing.
All that, however, is fairly standard for good quality crochet cotton. The thing that makes Curio stand out is the colors:
And now on a related note, a preview for my book: