From the Knit Rowan website:
Knit this women’s cabled cardigan from the Summerlite 4ply Collection, a design by Martin Storey using the sumptuous yarn Summerlite 4ply (cotton). With a pretty threaded lace ribbon detail, round neck, deep ribbed cuffs and welt and full length set-in sleeves, this knitting pattern has a two star difficulty rating.

You will also need 6 - 15 mm buttons

You will also need 6mm wide lace ribbon in 3 complimentary colors for weaving through the eyelets in the body of the sweater - each ribbon should be 40(40, 60, 60, 80)“ 1.25(1.25, 1.75, 1.75, 2.25, 2.25) yards, 100(100, 150, 150, 200)cm long.

Yarn used - Rowan Summerlite 4 ply
Color 428 High Tide - 7(8,9,10,11) balls