This is one skein crochet pattern (400 m in 100 gr approx).
Both sides, front and back, look nice in finished work.
You can adjust the size of puff stitch the way you like.

Pattern is easily adaptable to any size (just measure your favourite scarf to have a reference).

A bit more info about this pattern: http://kreativekafe.com/page/dreaming-about-winter-croche...