AVANT GARDE "Prefabricated Secondary Combustion Fire Pit" is characterized by the lean beauty created by functionality. The simple and sophisticated shape is a functional beauty born from only the necessary structural elements. It is a product that can produce a strong flame and is designed to enjoy outdoor activities comfortably. It combines an elegant design with great functionality to provide a relaxing experience for the user. The structure of "secondary combustion", which is further burned by smoke and hot air (oxygen), which is the combustible gas left over from burning, reduces smoke, reduces odors, and reduces burning residue. Since it is an assembly type, it is easy to clean and compact to store. It is made of stainless steel (SUS304), which is both durable and beautiful. We hope to contribute to the promotion of sustainable outdoor activities through environmentally friendly product design.