From the Bumblebirch website:

Vernacular is a limited run of local wool grown and milled here in the Pacific Northwest. From start to finish, this product is created by family-owned small businesses in my own local economy. Lofty Cormo wool has been blended with soft, fine Merino wool and spun into a rustic 3-ply fingering weight yarn. Fingering is very versatile: perfect for lighter-weight garments and easily doubled for a thicker fabric.