This sweater includes lots of interesting stitch patterns in the body of the sweater on both the fronts and back. The sleeves are done in the main color in the block stitch. 2X2 ribbing of 2 rows of k2, p2 alternating with 2 rows of p2, k2. The fronts each also include an interesting bobble tree panel and a leaf panel. I think it would work in any aran weight yarn?