Picked these up as a small gift for my brother who is always talking about the mountains. The unisex one-size-fits-most fit worked fine for both of us, and the design is fun without being too loud. They're a nice everyday sock for hiking, biking or just hanging around camp. Not a heavy technical sock, so don't expect much cushioning on long climbs, but for the price and the joke factor they do the job. Would buy again as a stocking stuffer.