The yarn is "Soy Silk" brand, but I can't seem to find it listed on the soy silk website. It's a blend of 50% soy silk, 50% merino wool.
It is beautiful yarn to knit with. It's soft and light, and it does drape nicely (as promised). The yarn is slightly shiny like silk worm silk. It knit up beautifully.
They're comfortable as socks, but I'm still not sold on the fiber. They're softer than wool alone, but they aren't as warm. They seem to be a bit "sweaty" as though the socks were made out of acrylic yarn. They don't seem to wick away moisture as promised. I would not wear these socks out of the city if I depended upon them to keep my feet safe from frostbite.
I also noticed as I was knitting these socks that the fiber itself is rather wimpy. If I tug on the yarn, it doesn't take much force to break it. I'm not sure how well these socks will wear.
I used a pattern with braids and cables, and I noticed that the more the yarn was handles, the "fuzzier" it seemed to get. The braids and cables are not as neat and well defined as they would be with 100% wool.
Still, they're a beautiful pair of socks. The spinner used bright pink fiber and carded it with electric blue, and the effect is an enchanting and muted purple. Only when you look at the yarn closely can you see that the purple effect is actually the separate pink and blue fibres. It's quite pretty and the colour variation makes the socks unique and interesting.
I think soy silk would make a nice sweater that would be nice to wear around the house or office. It wouldn't be too warm the way that 100% wool sweaters can be. A sweater would likely last longer too, but I'd be worried about pilling.
The cost of the yarn was middle of the road. I spend $6/ball, and I used three balls in the socks. I'd need 10 times that amount to make a sweater, so this yarn may have priced itself out.
I will wait to see how well these socks wear before I buy soy silk yarn again. I would reccomend this beautiful yarn as an accessory or flourish in a piece made with a stronger or warmer fiber. It would look lovely in a fair isle pattern with alpaca yarn, and the alpaca would compensate in warmth for what soy silk lacks.