Are TOMS meant to be worn barefoot?

I'm curious to know, are TOMS designed specifically to be worn barefoot? It's not uncommon for people to wear shoes without socks, but I'm wondering if there's a particular reason why TOMS might be better suited for that style of wear. Is there something about the materials or construction that makes them more comfortable or practical when worn barefoot? I'd appreciate any insights you might have on this topic.