Smartwool Phd Run Ultra Light Cushion merino socks are thin, comfy, breathable, and have been enjoyable to wear. So far I have only worn them on the treadmill, as it’s super freezing here lately in Michigan, and I need a bit bulkier of a sock for such frigid conditions. However, I see this being an excellent choice as a 3-season sock, so it may still be satisfying on slightly cooler temps (perhaps down to 50º). I will definitely report back as I get to experience them in more varied conditions.
54% wool, 42% nylon, 4% elastane
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