The colors in the photo looked more pastel than neon and very bright neon colors were displayed. FYI, the "One Size" option is a size 9-11. I bought these socks for a color race I'm running with a friend and luckily the elastic seems to be very good so they don't have to keep falling off while running. Overall quality I would rate as good, just bear in mind when purchasing these socks that this is likely to be a high quality disposable item.
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