Four axle bogie flat wagon with sliding canvas roof. This wagon has been designed for transportation of bulky materials and part loads and of the goods requiring protection from the elements of nature or possible pilferage as well. The sliding canvas roof can be easily operated by a single hand. No tools is required. All commonly used mechanical devices for loading and unloading can by used to fill or empty the wagon´s cargo space. Wagon with a combined floor(metal sheets+wooden flooring).