My 4 year old has big toes that want to cross under the next toe and we have opted for healthy barefoot/minimalist shoes. When he wears socks, his toes don't actively counteract the contraction of a normal sock, which allows him to splay and better align his toes. It takes a few seconds longer to put them on, but it's worth it for us as we continue to see improvements in his foot structure and fewer complaints of knee and leg pain.
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