faom it is less breakable especailly if you are clumsy.
I assume you mean the water in the cup. Foam is a better insulator than glass, so it should be the water in the glass cup.
pu foam
Foam lets extra cold air reach the water
Foam glass is made when air bubbles are put into the glass when it is melted . Fiber glass is glass that has been pulled into long strands.
foam has better heat retention
Foam will insulate better than plastic.
Most foam glass is made by grinding glass from a glass melt into small particles and then mixing it with a carbon containing material and then reheating it up above the melting point of the glass in a box mold. The carbon material reacts with the glass to make carbon dioxide to make the foam. The glass used is mostly recycled glass, but the double heating and the grinding process makes the product expensive, but the product has as very long life compared to organic producs and more durability...
Foam container will keep it hotter. The air bubbles in the foam act as an insulator.
plastic, fiber glass and foam
bulletproof glass and polyester foam
It sticks easier to glass. Or to flatter surfaces. Cloth or foam wont work. It sticks easier to glass. Or to flatter surfaces. Cloth or foam wont work.
Product is foamed cellular glass, better known as Foamglas. Tis is a tradename of Pittsburg Corning. Another manufacturer called Cell-U-Foam existed, until PC bought them