The Euro Seasonal sock is meant to a be multi-seasonal product. The natural Merino wool is thin and laced into synthetic fibers to provide warmth and comfort in colder conditions, but remains thin enough to be used when the temps are a bit higher as well. If we were to describe them in three words, it would be: thin, soft and elastic.
Durability is superb and should last many rides and washings. Since the wool content is upward of 70%, it is best to wash these in cold water and hang dry.