Jon, the material weighs a tad over 10 ounces per square meter.
Answered on 5/28/2013 by Clyde from NRS
I don't know about the weight rating but it's mega thin. it's as thin as a coated fabric could be and still be supported. i ordered some by accident so i didn't wing up using it but i looked it over and it's super rugged for what it is.