same thing for me with SWK, I measured myself and ordered a SWK Economy size 48, when I got it and tried it on....the damn thing fell to the ground it was so large, I even posted about it in here.

So then I ordered a new one size 44 and this time it fits, although still a bit loose, so I guess a size 42 would be my perfect fit.

Few weeks ago I ordered a size 44 SWK Standard and this one is even larger than my SWK Economy size 44, at smallest strap hole the thing is still too loose on the fell so some pleats bunch up on the sides of the straps.

So, surprising as it may be, I am a measured 46 (I've lost some weight) and for some reason all SWKs I own are way larger than measured and I've had to order them 2-3 sizes smaller for a perfect fit.