Advert article date June 2009 Demron is a radiation blocking Textile fabric made by Radiation Shield Technologies. The material is said to have radiation protection similar to lead shielding , while being lightweight and flexible. The composition of Demron is proprietary, but is described as a non toxic polymer. ref name AP cite news title Radiation proof fabric developed publisher Associated Press date 2002 11 14 url http news.bbc.co.uk 2 hi science nature 2478465.stm accessdate 2006 10 24 ref According to its manufacturer, while Demron shields the wearer from radiation alone, it can be coupled with different protective materials to block chemical weapon chemical and biological agent biological threats as well. ref cite web title Radiation Shield Technologies RST Online Store url http www.radshieldstore.com store detail nbc.htm accessdate 2006 10 24 ref Demron is roughly three to four times more expensive than a conventional lead apron, but can be treated like a normal fabric for cleaning, storage and disposal. ref name AP More recent uses for Demron include certified first responder hazmat suits as well as tactical vests. Demron is proven by the United States Department of Energy to significantly reduce high energy Alpha decay alpha and beta decay beta radiation, and reduce low energy gamma ray gamma radiation . When several sheets of Demron are laminated together the result is a much more powerful shield, though Demron cannot completely block all gamma ray gamma radiation . ref cite web title Radiation Shield Technologies RST Research Results url https www.radshield.com RST Livermore Summary.pdf format pdf accessdate 2008 01 02 ref See also Nuclear safety References Reflist External links http www.radshield.com Radiation Shield Technologies http appft1.uspto.gov netacgi nph Parser?Sect1 PTO1&Sect2 HITOFF&d PG01&p 1&u 2Fnetahtml 2FPTO 2Fsrchnum.html&r 1&f G&l 50&s1 2220020043631 22.PGNR.&OS DN 20020043631&RS DN 20020043631 United States Patent Application http www.sciam.com ... more details