Step of camper van

It's a foam-based deck or surface specifically designed for camper vans. 
It's typically used on the steps or entry area of a camper van to provide comfort, anti-slip properties, and durability. These foam decks are often made from materials like EVA or PE foam, which are closed-cell and resistant to water, making them suitable for outdoor use. They can be customized in terms of thickness, color, and texture to suit the aesthetic and functional needs of the camper van.