new mattress store near me growell beds and furnitures trichy A bonded foam mattress is a type of mattress made from polyurethane foam, commonly known as PU foam This type of foam is made from petroleum-based chemicals. It's known for its supportive and resilient properties. PU foam mattresses are popular because they offer a good balance of comfort and support. The foam conforms to the shape of your body, providing pressure relief and cushioning where you need it most.