Label states: Hand wash. Do not Bleach. Dry flat. Low iron.
Also, gauge give on label is knit - 18 st x 24 rows on 5mm needles; crochet - 10 st x 14 rows with K/10.5mm hook equals 4 x 4 inch. However, I think it would look pretty sloppy, DK is closer - I got 10 wpi.