Fiber Content: 42% rayon, 30% nylon, 28% wool.

From the Prism web site:

“Equinox is new for fall 2006. It is an interesting railroad style ribbon that is half wool and nylon and half shiny rayon. Like all of our double dyed yarns, the skeins go through two different dyeing processes. The first dyes the wool and nylon half of the ribbon, while the rayon stays white. The next dyes the rayon half, and since we both turn the skeins and dye different colors, the end result is a rich mix of color layered upon color. The yarn has excellent yardage and knits into very light weight garments with good memory.”