Hermès size Waist circumference cm to in ... just measure your waist or where you want the belt to hit you... this info is on their website under the belt kits size guide link...
70cm - 27.5"
75cm - 29.5"
80cm - 31.5"
85cm - 33.5"
90cm - 35.4"
95cm - 37.4"
100cm - 39.4"
105cm - 41.3"
110cm - 43.3"
115cm - 45.3"
120cm - 47.2"
70cm - 27.5"
75cm - 29.5"
80cm - 31.5"
85cm - 33.5"
90cm - 35.4"
95cm - 37.4"
100cm - 39.4"
105cm - 41.3"
110cm - 43.3"
115cm - 45.3"
120cm - 47.2"