There wasn't anything available under 42 inches  Wanted to buy a new belt about 6months ago.  I noticed the same thing at whalemart, nothing under a 42.  At first I didn't believe it, but I eventually realized something.  All of my belts prior to now have been bought at an exchange (military store) where they probably don't even go up to a 42.    So I just kept an eye out and found one a couple of months later at a clear-out sale.  What were they clearing out?  Stuff that fit me, luckily.  Had to make room for more tents and tarps I suppose.