In this proposed Phase II program, builds on the phase I feaibility where a multifunctional lightweight radiation shield composite was developed and fabricated. This structural radiation shielding is high strength, syntactic polymeric where the polymer is filled with high strength low Z material. The phase II program will provide radiation modeling and testing for these new structural radiation solutions as well as a physical property database for using them in space habitats. The Phase II program will address issues including flammability, attachment, and incorporation of these new materials into existing and future space habitat designs. The accumulation of the phase II program will be prototype components that can be tested at TRL level 5 or flown for TRL level 6.