When I clean and detail my vehicles this is the first thing I grab. It's perfect for cleaning wheels and tires, cleaning, polishing and waxing lower areas on a vehicle. Ideal when doing mechanical work or use it as a pillow while catching a nap under the car. "Yes dear, I'm out here working!" Made from super-soft 1" thick NBR foam. It's a polymer that is soft, flexible and durable. Measures 20 1/2" x 13 3/8" so it's big enough for kneeling or sitting. Easy to clean with water. There's a built-in handle for carrying and for hanging up on a wall. It is also great around the house as well when doing "indoor" chores or out in the garden. Take it to the park or a sporting event. Protect your knees, back and butt today.