Long time fan of merino wool products but some wool socks can be too thickwarm. These socks are prefect for all types of weather even hot days and have worn them for road, cyclocross and even a DH run. They're well built, fit snugly but not too tight and seem to be wearing well. Only minor complaint is the vibrant color it difficult to get clean after getting muddy so get a black pair for those days.
These socks are made of lightweight merino wool, which insulates well in all conditions and won't crowd out space in tight fitting shoes. I've worn these on several hot long rides, and my feet never felt clammy. The high cuff provides good heel support-snug but not too tight. For reference, I wear size 42.5-43 shoes and the medium size socks fit perfectly.
These have quickly become my go-to socks. So comfortable in all kinds of weather, not bulky at all. Not itchy, either. I have size 11 feet, and these guys fit a bit small, just perfect for me. Nice compression without pinching at the top.