Our Heavy Duty Shipping Case is the strongest canopy frame (5 / 10 FT only) shipping case available. Made from rotationally-molded double walled plastic, this case features a smooth interior, spring-loaded rubber grip handle, 6.5" x 10" label area, and is 1/2" foam-lined on the top and bottom. The case also has 2 large rolling casters and a side-release buckle, which ensures that the lid remains in place while shipping. This case is crush proof.