Bike Rags Wool Socks (summer weight) - by DeFeet
These are most amazing socks ever. Seriously.
DeFeet says this: The Wooleator is a thin wool version of the original DeFeet Aireator. Wooleator's are a non-padded, thin sock that can handle 4-season use. They are a great choice any time moisture is in the forecast or when riding in mountainous terrain.
The Wooleator Comp is knit with a soft wool/poly blend yarn composition. Merging the natural characteristics of wool with recycled polyester creates an inherent moisture management environment to help your feet stay cool and dry in the summer and warm and dry in the winter.