Good for you and the environment! We took fibers leftover from making other yarns- the soft too-light fluff, the bits that otherwise would have been lost to the waste stream - and made this handy, durable, and surprisingly soft high quality yarn. We call this 85% recycled cotton/15% recycled polyester blend ″clean cotton″ because it's a yarn you can feel good about using. 120m (131yds) and 75g (2.6oz). 85% Recycled Cotton, 15% Recycled Polyester. Machine wash - warm, do not bleach, tumble dry - low heat, iron - low heat, dryclean - any solvent. 6 balls/bag. The recommended knitting needle is 9-10mm (US size 13-15) = 1.25-1.75 sts x 2-2.5 rows = 2.5cm (1″) in ST st. The recommended crochet hook is 9-10mm (US size M/N-P/Q) = 1-1.5 sc x 1-1.5 rows = 2.5cm (1″). Remember to ALWAYS check tension/gauge before beginning your project.