Adventure Van Accessories - Roof Top Rack & Sleeper System PopRak is a rooftop rack & sleeper system that retains the utility of a traditional rack, while accommodating typical roof accessories (fans, awnings, gear, solar, lights, etc.) Because it doesn't modify any bulkhead braces, it preserves the structural integrity and safety of the vehicle. The proprietary PopRak Portal™ provides modular docking for rooftop solutions to accommodate a wide variety of additional accessories.