Our mid-length midroof sleeper is perfect for long-haul applications that are weight conscious, like bulk and liquid tankers. The midroof design provides plenty of headroom in both the driving and living areas. The 62" sleeper area packs an impressive array of amenities, including an optional refrigerator and space for a microwave, as well as a full 39" wide standard twin mattress. The VNL 640 also features the same upgraded climate control panel found standard in our larger sleeper models.