Recovery Shoe Material Selection & MVP Manufacture

I have a recovery shoe that has been designed. I have the 3D STL file. I have one of the components selected but need help selecting a few other materials for the shoe along with help manufacturing a few MVP to test... (Budget: $250 - $750 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, 3D Rendering, Manufacturing Design, Product Design, Solidworks)