DK yarn weight is given on sweater pattern Into the Blue, which calls for this yarn.

Do not iron, do not bleach, dry cleanable.
Hand wash, hand temp water, cold rinse, short spin, keep away from direct heat.

Gauges found associated with patterns:
16 st and 21 rows = 4” on 5.5 mm needles
8 x 12 = 5 cm in reverse stockinette (either 4.5 mm or 5.5 mm)