With the proliferation of cell phones, wireless internet, and personal electronic devices, the ill effects of electromagnetic radiation are a huge concern. considering the high levels of em radiations (due to the fact that we use more and more electronic devices everyday) a special concern for expecting mothers and influence of em radiations on fetuses and dna damage exist. possible connections between em radiations and miscarriages, birth defects, autism in newborn babies, attention deficit disorder, neurological dysfunction, hyperactivity, learning disorders, childhood asthma etc. have been reported. in this concern we have developed light weight cost effective polymer based flexible composite fabric which can be used as shielding against em radiation. for this, polymer based flexible composite was prepared using polyurethane as matrix and multi walled carbon nanotubes (mwcnts) as conductive filled inclusion. melt blending technique is used for the preparation of composite (having 5 wt.% of mwcnts) while two roll mill was used for the preparation of long flexible sheet of composite. electromagnetic interference (emi) shielding effectiveness of composite was investigated using vector network analyser in the frequency range of 0.2–1.5 ghz (mobile telephony range). the prepared flexible composite was stitched with cotton clothes to prepare belly belt. the fabric/belt provides 20-35db (~99.99 % attenuation) rf radiation attenuation in given frequency range (0.2-1.5 ghz). the importance of selected processing technique, matrix material and filler combination has been highlighted to demonstrate the practical utility and commercial viability. these studies lay the foundations for the development of commercially viable emi shielding materials.