Below are measurements (+/- .5") for each size"
Size 28
Tip excluding buckle to first hole:27"
Tip excluding buckle to second hole:28"
Tip excluding buckle to third hole: 29"
Tip excluding buckle to forth hole: 30"
Tip excluding buckle to fifth hole: 31"
Size 30
Tip excluding buckle to first hole: 29"
Tip excluding buckle to second hole: 30"
Tip excluding buckle to third hole: 31"
Tip excluding buckle to forth hole: 32"
Tip excluding buckle to fifth hole: 33"
Size 32
Tip excluding buckle to first hole: 31"
Tip excluding buckle to second hole: 32"
Tip excluding buckle to third hole: 33"
Tip excluding buckle to forth hole: 34"
Tip excluding buckle to fifth hole: 35"
Size 34
Tip excluding buckle to first hole: 33"
Tip excluding buckle to second hole: 34"
Tip excluding buckle to third hole: 35"
Tip excluding buckle to forth hole: 36"
Tip excluding buckle to fifth hole: 37"
Size 36
Tip excluding buckle to first hole: 35"
Tip excluding buckle to second hole: 36"
Tip excluding buckle to third hole: 37"
Tip excluding buckle to forth hole: 38"
Tip excluding buckle to fifth hole: 39"
Size 38
Tip excluding buckle to first hole: 37"
Tip excluding buckle to second hole:38"
Tip excluding buckle to third hole: 39"
Tip excluding buckle to forth hole: 40"
Tip excluding buckle to fifth hole: 41"
Size 40
Tip excluding buckle to first hole: 39"
Tip excluding buckle to second hole: 40"
Tip excluding buckle to third hole: 41"
Tip excluding buckle to forth hole: 42"
Tip excluding buckle to fifth hole: 43"
Size 42
Tip excluding buckle to first hole: 41"
Tip excluding buckle to second hole: 42"
Tip excluding buckle to third hole: 43"
Tip excluding buckle to forth hole: 44"
Tip excluding buckle to fifth hole: 45"