This is the dyed version of the DK weight Bare (which is sold undyed in 100 g hanks).
Description from Knitpicks.com:
Swish is the superwash of knitters’ dreams. By using high grade Merino wool (20.5 microns), we have been able to produce a machine washable yarn that is super soft - definitely worthy of being worn against your skin. Just the ticket for baby clothes, afghans, children’s clothes, charity knitting and gift knitting. No need to worry about the care your knitting will receive since this yarn can be machine washed and will come out even softer than before!
Dry flat - this yarn will shrink/felt in the dryer!