Your Fluid Running Flotation Belt can be sized from a 24" waist to a 52" waist by adjusting the straps.
To make it smaller, pull the strap through the back of the belt until the receiving buckle is just at the side of the belt (see red square).
Adjust the buckle placement on the other side to the necessary length. Once you put the belt on, remove extra slack in the strap to make it tight around your midsection.