Duo XLSeats and sleeps 2 3 long wheelbase The DUO XL gives you the full DUO layout with more room to spread out. Built on a long wheelbase Sprinter, it seats and sleeps two with space to spare. The near queen bed extends to near king size on a custom memory foam mattress. A 60" galley with handcrafted countertops, 80L fridge, and 20 gallons of water means you can cook and camp for days off grid. Add a bench shower, dinette seating, or bunk beds for kids.