4ply yarn is a fine yarn traditionally found in British and European knitting. Named for its four-ply construction, 4ply yarns are commonly associated with fingering weight yarn, designated yarn weight symbol 1, and are typically worked on needles ranging from US 1 to US 3 (2.25mm to 3.25mm), depending on the project and desired fabric.

The Woolly Thistle’s 4ply yarn collection brings together special yarns from heritage mills and makers around the world. Explore breed-specific wool, traditional blends, and versatile yarns ready for socks, shawls, colorwork, and lightweight garments where every stitch can be enjoyed.