MCS is a 75/15/10 blend of Merino, Cashmere and Silk. This is available in a 400 yard skein of fingering weight yarn
I have purchased both worsted weight and fingering weight from Sun Valley and both are excellent. All the colors are beautiful, it's hard to pick just a few, so luckily they are on-line, not just Fiber Shows. This is the best fingering weight yarn Ive ever knit with. It's soft, and beautiful. I think I'm hooked!