What's the difference between the Single Wall and Double Wall?

What's the difference between the Single Wall and Double Wall?

quot;What is the difference between Single and Double Wall?""Which one is better?""Does it sound different?" "But which one should I get?"  Stainless Single, Stainless Double, Burnt Single, and Burnt Double. It's easy to tell the difference between Stainless and Burnt, but what's the difference between single wall and the

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What's the difference between the Single Wall and Double Wall?

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