Sirdar Hayfield Bonus Super Chunky is an incredibly popular 100% acrylic yarn, available in a wide range of colours, from soft and neutral through to more vibrant shades. Despite its budget price, Sirdar's Bonus range is one of the best 100% acrylic yarns available and is softer and less scratchy than most. Popular for both crochet and knitting projects, Bonus Super Chunky is machine washable and knits to a standard super chunky tension - the ideal super chunky project yarn!