the waist is deffinitely elasticized. that's why the wasitband has all of thise sewn in stripes thru it- thats where the elastic is held in, and you can see the drawstring sticking out the top, and there is no velcro on the closure.
I wasn't saying they were EXACTLY the same, they were most likely custom made, but if you ordered these....
http://store.titleboxing.com/titlebo...design-13.html
in orange and white it would be pretty darned close if you ask me!