This is a 2-ply sportweight worsted spun cormo yarn. 1500 YPP

In the worsted spinning system, wool (or other fiber) is carded, combed, and drafted before being spun into yarn. As the wool is combed, the shorter fibers are removed, and the remaining longer fibers are made more parallel with each other.

Worsted-spun yarns are dense and strong and smooth; because of their density, they are relatively thinner than woolen spun yarns.