what is the difference between closed cell and open cell foam?

closed cell vs open cell foam: Heat insulation & insulation for vapors, noises, and other elements has an alternative! The foam!

Closed-Cell vs Open-Cell Foam. Which Is Better? - Akfixstore Blog

Open Cell Foam Vs. Closed Cell Foam: Best Definitive Guide – FOAMTECH

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Open Cell vs. Closed Cell Spray Foam Insulation

Open Cell Foam Vs. Closed Cell Foam: Best Definitive Guide – FOAMTECH

Open Cell vs Closed Cell Foam Insulation

Closed Vs. Open Cell Insulation

What is Better Open Cell or closed cell foam insulation?

The Difference Between Open-Cell and Closed-Cell Spray Foam