We bought them in size MEDIUM. I think these are good socks but we are returning them as another pair of socks we bought at the same time will probably last longer than these. First we tried on LARGE Goldtoe socks (Goldtoe L is a shoe size 3-9 while Trimfit M is a shoe size 12-5.5 so both should fit my son who wears shoes 3.5). His goldtoe socks aren't big at all so I'd rather keep them as I want them to last longer. Not all sock manufacturers use the same size. Toe = Shoes 3-8.5 GOLD TOE Cotton Dress Middle Toe = Shoes 9-2.5 GOLD TOE Cotton Dress Big Toe = Shoes 3-9 Boys Gold Toe Round Socks 8-20 Ribbed (3 Pairs), Black, L(3-9)
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