Good for you and the environment! Universal Yarns 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.
 
They call this 85% recycled cotton/15% recycled polyester blend "clean cotton" because it's a yarn you can feel good about using.
 
Skein Information
Weight: Worsted
Yardage:  131 yards/75 grams
Gauge: 18 sts x 4" using US#8 needle
Fiber Content: Recycled Cotton 85%/Recycled Polyester 15%
Yarn Care: machine wash - warm, do not bleach, tumble dry - low heat, iron - low heat, dryclean - any solvent