Size Guide OODIE™ ORIGINAL FRONT LENGTH CHEST CIRCUMFERENCE HEM CIRCUMFERENCE ONE SIZE 100 190 204 OODIE™ ORIGINAL FRONT LENGTH CHEST CIRCUMFERENCE HEM CIRCUMFERENCE ONE SIZE 39.37 74.80 80.31 How to Measure cm in Need Help Finding Your Size?  Determine your size by slipping into your favourite undergarments and measuring directly on your body. Consult our size guide and product features for the perfect fit. Measuring guide Front Length: Take a tape measure and start from top of your shoulder and extend it down to the length listed in the size chart. Chest: Measure around the widest part of your chest. Typically, 2-3 centimetres below your underarm. Waist: Measure around the narrowest part of your waistline. Hips: Measure around the widest part of your hips. Inseam Length: Measure from the crotch down to the bottom of your ankle. Body Length: Measure from the shoulder down to your crotch.