This is the biggest, most bad ass waist belt for a bag that I've ever seen.
If you don't know what the Vandal is, then all I gotta say is what the hell already!? Wake up!! Read more about it here. My only complaint of the Vandal was that the waist strap wasn't included. When it came, I saw why. It's not a "traditional" waist strap- it's a full on waist belt!
Built just like the bag it's named after, this belt is big- really big like those gigantic leather belts people wear when they're lifting some heavy jazz or pumpin' some iron.
It fits like a glove into it's slot on the Vandal's back, then wraps around you as tight as you want. The perfect strap for a perfect bag- because with a bag like that, you're definitely gonna need it!
If you're already a proud Vandal owner and don't have the belt, it REALLY takes the load off! If you're not a proud Vandal owner, I'd check out their site- they've got four bags on their roster.
The Vandal is the only one I've seen in person, but I can say that they're all pretty righteous in their own right- a backpack: one that holds everything but the kitchen sink and one that holds the sink too, and a messenger style bag the same way.
-Brandon