I’ve always wanted to be a fan of running in merino, but have had difficulty finding the right products as they too often stretch out, lose structure, or lack the technical feel I want on longer days out. Plus, I sweat a ton and the thermoregulating properties of merino just haven’t stuck with me (or maybe in this case, they stick on me too much).

This sock completely changed my perspective. It strikes the rare balance of true performance and natural material, which delivers structure, durability, and comfort without compromise. It’s the best merino-based performance sock I’ve worn. And as a bonus, you can go days (weeks?) without washing it, with zero downside.

I usually hate riding or running in merino- gets baggy, and lacks the tech feel I’m looking for on long missions. This sock has changed my tune on merino- it is the best performance-meets-natural material sock I’ve found. Plus you can go days (weeks?) without a wash and no stink

Just when I thought my sock hunt was over after finding (and loving) the LoFi they've taken it to another level with the AroFi. Super supportive in all the right places and the merino performs brilliantly - light, doesn't hold moisture, no smell and feel amazing even after a couple of runs. Can't recommend them highly enough!

I’m genuinely impressed with how good Courier’s merino socks are. From the moment I tried them on, they felt incredibly soft, supportive, and well-made. You can tell there was real thought put into the design and materials—everything about them just works.
They keep my feet comfortable all day long, whether I’m out and about or just relaxing at home. No slipping, no bunching, no overheating—just pure comfort. It’s rare to find a product that actually exceeds expectations, but these did exactly that.
I’m really glad I gave Courier a try, and I can honestly say these merino socks have earned a permanent spot in my drawer. Highly, highly recommend

These are incredible. As comfortable as my previous all time favorites, the lofi, but merino wool helps these stay comfy even when damp and they don’t hold odor. Can use them for several runs before needing to wash. Hard to find a more perfect sock than this!