Yes, cotton and more cotton! On the left, in the top picture, we have an algodon yarn from Spanish manufacturer Katia in a lovely taupe. On the right we have a baumwolle yarn from German manufacturer Stahl-Wolle in a nifty, multi-coloured ply yarn. Very nice. And yes, I realise that the "baumwolle" and "algodon" mean the same thing, but don't they look and sound more interesting than "cotton"? Even the aesthetic of the vowel sounds is superior.