I've tried several merino t-shirts (kuiu, icebreaker) this feels most durable but not as soft as icebreaker. I've worn it probably 10 times and on several day hikes/runs and its felt good. I would pick icebreaker for day to day wear and smart wool for hiking/backpacking. This is the shirt I will take with me on the JMT in a few weeks.
This review was written in the old system and had content requirements that are different than reviews written today.