I used this belt to travel in the Pacific for 2 months. I was a bit worried about where to put my money and decided to get this belt because it had such high reviews. For me it lived up to my expectations.
The belt itself is strong and even without the secret money compartment it would function as a good belt. It has a plastic buckle that is surprisingly strong and did not crack or break even though it was used on a daily basis. The compartment inside holds about $260 in $20s or even more if you decide to hold higher currencies.
I am a 32" waist and there was plenty of slack however I do not think that this belt would be good for anyone with 38"+ waist.