Foam neoprene is made by filling neoprene with bubbles of nitrogen gas. Neoprene foam can compress more, and it is a better insulator than solid neoprene.
Open Cell Industrial Sponge - The Rubber Company
Open Cell Vs. Closed Cell Foam: What's the Difference?
what is the difference between closed cell and open cell foam?
Open Cell vs Closed Cell Foam [A Quick Guide]
Open-Cell vs Closed-Cell Sponge Rubber - Quanex
Open Cell vs. Closed Cell Spray Foam Insulation
Taking a Closer Look at Foam: Part 2 - Closed-Cell Foam - The Foam FactoryThe Foam Factory
Sheet Rubber Articles
Closed Cell Sponge Rubber and it's Applications
Useful in aa variety of applications, home, automotive, industrial High-density foam decouples vibration, insulates and isolates. High quality finish
Closed Cell Neoprene Sponge Rubber Foam Sheet 1/8 x 40 x 42 (Grey)
Open Cell vs Closed Cell Wetsuits - Wetsuit Wearhouse Blog
Closed-Cell Foam between Studs Is a Waste - Fine Homebuilding
Open Cell & Closed Cell Foams: Keys to Making the Right Selection
Spray Foam: Open-Cell vs. Closed-Cell