The part in detail:

Part B66648307 , A-CLASS 169 DEEP BOOT TUB

Type:A-CLASS 169 DEEP BOOT TUB

Deep high boot tub moulded to the exact shape of the boot floor of the A-Class. Protects the boot when transporting objects. Material HD–PE: highly impact-resistant and at the same time flexible. With a very high edge. Food can also be transported in this tub. Easy to clean. Simple to put in and take out of the boot.  The shape may vary slightly from image. For use with the load compartment floor in lower position.

Price: £161.99