Our tag 80 for 12-18 months, tag 90 for 18-24 months, tag 100 for 2T-3T, tag 110 for 3T-4T. <br><br> Size Descriptions:<br><br> 12-18 months:<br> Coat Length 13.7", Chest 9.7*2, Pants Length 18.4" <br><br> 18-24 months: <br> Coat Length 14.5", Chest 10.1*2, Pants Length 19.6" <br><br> 2T-3T: <br> Coat Length 15.1", Chest 10.5*2, Pants Length 21.2" <br><br> 3T-4T: <br> Coat Length 15.8", Chest 11.1*2, Pants Length 22.9" <br><br> Please allow 1 inch error owing to manual measurement.