If this were described as fingering weight yarn, I would rate it four stars. This is a soft-textured merino yarn, but I found that I needed to use a #3 needle to get an acceptable stockinette swatch, so I had to use a pattern that requires fingering weight yarn rather than the sport weight I wanted. The yarn is not evenly spun there are several thicker areas encountered frequently. Thus, this is not a yarn I can recommend. I am not onmyneedles, and I have not reviewed this yarn previously.
I ordered this yarn because I wanted to knit socks to match one of the colors I had used for a sweater knit of three different Koigu colors. I was aware that it would be a different dye lot than the one I had used for the sweater, but I expected a close-enough match. Wrong! The yarn I received is much lighter in color and has a great deal of white undyed wool in it. I kept it because I can use it for another project, and I found on ebay the same color number but different dye lot that is a close-enough match for the socks. Koigu buyers need to be prepared for unpleasant surprises. I have used Koigu KPPPM and KPM yarns for more than 10 years and have loved it, but I wonder if its popularity has resulted in compromises with quality of both base yarn and dyeing - but most notably with dyeing. Very sad. Base yarn is thinner than it was in the beginning, and a 50 gram hank tends to weigh 47 or 48 grams.