Inside foam is a gas. :)
foam
Whipped Cream
To put foam in a bounce house, you can purchase foam padding or blocks and place them on the ground inside the bounce house before inflating it. Ensure that the foam is securely positioned to provide a safe landing surface for participants jumping inside the bounce house. It's important to regularly inspect and replace the foam padding to maintain safety.
Foam or fibre insulation.
Most foam mattress toppers have a beige or white colored covering. The foam on the inside of the mattress topper may be any color, grey, white, blue etc.
Foam is a substance that consists of two states of matter: a gas and a liquid or solid. The liquid or solid traps the gas inside.
well actually nothing it just has air inside it .!?But not always it can have foam in it too.
Refrigerators and freezers have plastic foam core as it is the most resistant to the low temp inside the compartment,but even Teflon can be used
Bicycles helmets are made of a tough foam padding on the inside and a liner made of polystyrene foam. The liner absorbs the bulk of the energy upon collision.
A softball is made of leather on top and yarn or string to hold the two pieces of leather together. Inside is compresed foam or urithane foam.
Heat cannot travel through the foam material so the drink stays well insulated inside the foam cup.
To protect your suitcase with foam during travel, you can purchase foam padding or foam sheets to wrap around your belongings inside the suitcase. Make sure to securely fasten the foam around your items to prevent shifting during transit. Additionally, consider using a hard-shell suitcase for added protection.