Interested in Biothane leather-like products usable in load-supporting pants belts--probably Beta Biothane 520 and 560. If you can supply them, I would like samples long enough of the 520 and 560 to evaluate their flexibility and load bearing capacity.  For color samples, I'm interested in a dark brown--the 520 in BR523 and BR525, and the 560 in BR563 and BR565. Welcome any thoughts you have on suitability of your individual products for this application.  Thank you.  V/R Doug