You can use it as a standard double knit weight for patterns using 4mm needles. Buy this yarn by the ball or as this Retro Domino blanket kit.
WHAT IS DOUBLE KNIT WEIGHT YARN?
It is the term used to describe the thickness of the yarn. Double knit is most commonly used for lighter weight adult sweaters, children's garments, hats, gloves, scarves, blankets and cushion covers and lots lots more! Also note the recommended needle or hook size is a 4mm or sometimes a 4.5mm. DK is also a popular term in the UK but in the US would be referred to as a light worsted or 6ply
YARN DETAIL
Composition: 100% British wool
Needle size: 4 mm
Weight: 100g
Meterage: 225m/246 yards
Tension: 4mm - 22 sts x 28 rows per 10cm square
WASHING INSTRUCTIONS
- This yarn is machine washable at 30 degrees
- Do not be tempted to tumble dry it
- Dry flat
- My personal view is to never machine wash a hand knit as the fabric might bot be stable enough to withstand a machine wash