Skeptical at first of a sock that prevents foot odour, I have notoriously bad foot stank when I take my boots off. As someone who wears steel-toed boots for 8 hours a day, this sounded too good to be true. I contacted their support and they assured me the would definitely work and promised a refund if I wasn't satisfied. WAS I EVER SATISFIED! I put them through the wringer, I wore them to the gym in the morning, then 8 hours of rubber boots, then volleyball in the evening. They were soaked with sweat and smell brand new. I was so shocked that I had to buy more. I now have 4 pairs. They are very comfortable socks, and the patterns are really nice too.