Sirdar harrap tweed yarn is a wonderfully versatile yarn that comes with genuine heritage named for the sirdar founders and inspired by the yorkshire surroundings of its offices this yarn is machine washable and can be used to create gorgeous knits for women men children and the home making it the perfect family yarn harrap tweed is a classic double knitting yarn and will knit to all sirdar double knitting patterns each 50 g ball gives you 155 metres of soft yarn with a blend of 40 nylon