I've been purchasing Swiftwick socks for over a decade. Bought my first pair in a cycling-related store and once I found them online, I've been buying direct ever since. I have multipe styles for my various activities - cycling, running, cross-training, and hiking and for warm vs cold weather wear. I buy these socks for all my family members and I give them as gifts too. I wear Swiftwick every day for work - I'm a personal trainer, so I'm washing them constantly. I still have the first pair I ever purchased in circulation; these socks last! Can't say enough good things about these socks.