What is the sponge under the car floor mat called?

[StKimberly]

The sponge under the car floor mat is called the floor insulation. The functions of car floor mats are as follows: 1. Protect the main carpet: Car floor mats can protect the main carpet inside the car from excessive friction and damage, while also maintaining a clean and tidy interior environment. 2. Sound insulation and shock absorption: Car floor mats can block noise generated by the car chassis and tires, protecting the driver's hearing from damage and improving driving comfort. They also provide cushioning to reduce body sway and foot vibration. 3. Anti-slip: Especially on rainy days, residual water and dirt on shoe soles can easily cause feet to slip. The anti-slip pedals on the floor mats help prevent slipping. 4. Enhance driving comfort: Car floor mats have a certain heat insulation function. Whether for front or rear engine cars, the floor mats can somewhat reduce the heat generated by the engine.