Open-cell foam is a type of foam material characterized by its interconnected cells, which create a network of open spaces. This structure allows air and moisture to flow through, making it lightweight and flexible. Open-cell foam is commonly used in applications like cushioning, soundproofing, and insulation. Due to its porous nature, open-cell foam is often more absorbent than closed-cell foam, making it suitable for products like mattresses and upholstery. However, it is less effective as a moisture barrier, which can limit its use in certain environments. Overall, open-cell foam is valued for its comfort and versatility.