This is a gorgeous use of moss stitch and our King Cole Big Value Super Chunky yarn. It is an easy knit and just takes a bit of attention to keep the pattern in flow. Both patterns have really soft lines and would make lovely winter garments that look stylish but are smooshy* and warm.
If you really wanted to level up the softness of this piece you could use King Cole Timeless Super Chunky which is 10% alpaca with acrylic and it is delightful to the touch. You will also need 8mm and 10mm needles and a stitch holder for the jumper.
*smooshy is a technical term