Trek Boot Sizing Trek Boot Sizing Size Recommended Foot Length 5T 13.3-14 6T 14-14.7 7T 14.7-15.5 8T 15.5-16.2 9T 16.2-16.9 10T 16.9-17.6 11T 17.6-18.4 12T 18.4-19 13T 19-19.7 1Y 19.7-20.4 2Y 20.4-21.6
