“The Aspire 4 is great...except it only comes in 3 colors in XL. In fact, most of the socks from Swiftwick seem to only come S/M/L :( I enjoy my black aspire 4s and would happily buy more if they came in XL.”
“I have been very pleased with my new socks. They feel great and never cause any discomfort. I don't have to think about my socks while running and that's perfect.”