James Brett Marble Chunky Knitting Yarn 100% Soft Acrylic Wool 200g Ball (Blue & Grey Mix MC2) James Brett's Marble Chunky knitting yarn, is fashionable, cosy and comes in a wide range of stylish shades. A range of marble effect shades in: Blue, Black, Brown, Orange, Pink, Purple, Red & White. The wool is available in 200g balls with a length of approximately 312 metres/341 yards and it is recommended that you use 6mm (UK 4 - USA 10) knitting needles. Material: 100% Acrylic. Care Instructions: Machine washable, can be ironed on a cool heat, do not tumble dry.