The sweater is knit in the round bottom up, holding the 3 strands together.
Color A: Biches & Bûches Le Petit Lambswool 200/250/250/300/300g +
Biches & Bûches Le Petit Silk & Mohair 125/150/150/175/175g
(1 thread of each held together)
Color B: Isager Spinni 150/200/200/250/250g
20 sts and 20 rounds = 10x10cm [4x4"] in corrugated rib 2/113.5 sts and 20 rounds = 10x10cm [4x4"] in stocking stitch using color A + color B (3 threads held together and knit in the round).
5mm / UK6 / US8 and 6mm / UK 4 / US 10
circular and double pointed needles