Symmetric Socks & More Christmas from Concept by Katia is a 4-ply sock yarn dyed to repeat, so two socks knit from one ball come out matching. The color sequence runs through gradients, stripes and Nordic-style bands in holiday reds, greens, whites and beiges, with a fine metallic strand for a little sparkle.
It's 74% wool and 22% polyamide for the strength a sock needs, plus 4% metallic polyester. One 80 g ball holds 349 yards, enough for a pair of adult socks.