FIREFIGHTER AT THE BACK OF A RESCUE PUMP FIRE ENGINE AT A NIGHTTIME A retired MAN German fire engine is seen here being used as a camper Hidden Camper Conversion: A Mercedes Fire Engine "Tap Truck" Fire Engine isolated on white background Stock Photo Alamy. Our best selling Backpacker will have your kids backs! Soft, lightweight, and water resistant, the bag is equipped with our Signature design 2 way zip main compartment that is roomy enough for folders, lunch bags and a full size front zip pocket for all the extras. It also features adjustable padded straps, 2 side water pockets and a convenient top handle that make them easy to carry, plus when its dirty, you can toss it into the washer. (see care instructions)