I've had 4 of these.  The slight stretchiness is a great feature.  All of mine have tended to wear out at the lower edge, directly behind my back, where it rubs against the car , mower, and tractor seats.  The leather braid frays through and the elastic tube that allows the belt to give and take pops loose.  That takes about a year of practically every day use for me. Then I just order another one, and I'm good for another year.