This is a great, basic Aran weight wool yarn.

Lovely Aran (worsted) weight yarn from Rico. Lovely and soft and machine washable!!
You'll need approx. 600 g (12 balls) for an average woman's size 40 sweater.
Loop has all 36 colours.

Composition:
100% Merino wool.

Weight and yardage:
Approx. 50g - 100m / 109 yds

Needles:
4.5-5mm / 7-8 US

Wash:
Machine wash at 30 degrees or dry clean. Lay flat to dry.

Tension:
(10 x 10cm, or 4" x 4") : 18 sts