Allow enough room in your fit for you to sit down and stand up without your shirt becoming untucked
Problem description
You like to move around but you feel trapped – raising your arms over your head causes the shirt to move up considerably. This causes it to come untucked too frequently, making you feel as though you are in a straight-jacket, or just mildly annoys you.
Solution
If you have selected the [Very] Tailored Shoulder/Armpit fit, then you’ll want to switch that back to Full Shoulder/Armpit Fit. If you already have selected the Full Shoulder/Armpit fit, then there is no easy fix other than to make the shirt’s chest width and sleeve width larger. You may also want to consider adding 1″ to your shirt back length so it doesn’t become untucked as easily.