Measurements:
Small:
Buckle to first hole: 37 and a half inches
Buckle to last hole: 42 inches
Medium:
Buckle to first hole: 40 and a half inches
Buckle to last hole: 45 inches
Large:
Buckle to first hole: 43 and a half inches
Buckle to last hole: 48 inches
X-large:
Buckle to first hole: 46 and a half inches
Buckle to last hole: 51 inches