Gone are the days of cotton sport socks you could wear to do anything. They are now ultraspecialized: made from soft, washable merino wool and loaded with hidden tech like seamless toes, compression, and anatomy-hugging shapes designed with the movement of specific activities in mind. Seven testers used more than 40 pairs of socks during several activities. They were looking for the most comfortable pairs that also were durable and wicked moisture during hard-core use. It's time to restock the sock drawer with these standouts.