Yarn-Dyed Knit-In Coloring — primary method
Team colors are dyed into the yarn before the sock is knit. Stripes, hoops, blocks, contrast cuff bands, and full solids all run in the yarn-dyeing stage. Color is in the yarn itself, not a surface print, so there is nothing to crack or peel through season-long match-and-wash cycles. Sharp color edges and full saturation from cuff to toe.