This is a velcro based belt with a unique closure mechanism from our friends at Oneiros Valley Innovations. The rear portion of the belt has a loop on it that the front portion of the belt goes through. This allows you to easily adjust the tension on this buckle-less belt. We asked them to do a collaborative version of their belt using our webbing setup of choice (double layer 1.5" 17337) and a couple of other details. This belt is fairly thin and behaves more like clothing than a belt -- which is nice under a pack. On the other hand, it is just stiff enough to adequately support an IWB or trigger guard holster for when you're in transit to the trail.