CoopKnits Socks Yeah! 4ply and DK are beautiful yarns, with a gorgeous palette of colours designed by Rachel Coopey. Socks Yeah! is hardwearing and can be machine-washed at 30 degrees. Perfect for socks, they are also great yarns for a large variety of knit and crochet accessories and, being machine washable, perfect too for kids (and adults!) garments!