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. 

75g/131 yds  I  85% recycled cotton, 15% recycled polyester  I  4 - medium