Overland Vehicle Systems TMBK Roof top tent’s are made from the finest materials. Starting out with heavy aluminum plated base assembled using marine grade stainless steel hinged and hardware! Features a 81 Inch square sliding ladder with steel hinges! Our Roof Top Tents are 4 seasons ready! Our Rooftop Tents are constructed using a 600D Heavy Duty Poly Cotton Rip Stop Canvas bodies that are build to stand the test of time through the harshest of conditions you can put yourself in. The Rainfly’s are made of a 420D Heavy Duty Polyester Oxford Waterproof Material to protect you and your family from the rain and snow.