What type of foam is most common

The most common type of foam is known as polyurethane foam. This type of foam is made from a chemical reaction between polyol and diisocyanate, and it is known for its excellent cushioning and insulation properties. Polyurethane foam can be found in a wide range of products, including furniture(mattresses, pillows,cussions), footwear,bags,clothes, packing, car seats,hats and so on.

Polyurethane foam is a versatile material that can be used for a variety of applications, it is the most common type of foam.