King Cole Price Wise Double Knitting yarn is a 100% premium acrylic yarn which has standard double knitting tension. It is ideal for a range of designs, child and baby knitwear, toys and for blankets - it would particularly suit those who can not tolerate wool next to the skin.  Ball size : 100g Length: 282 m ( 310 yards) approx Needle size: 4mm Tension:  28 rows and 22 stitches for a 10x 10 cm square. Machine washable at 40C, can be tumble dried.