There is no additional stretch or flex in fabric.
Flaws - No major flaws seen upon inspection (including no noted spots, stains, holes or tears, extreme pilling, extreme fading, or extreme wear, missing buttons or broken fasteners). However, this is a used item in good condition not a brand new item.
Measurements - Pictured in photos. Please double check as used sizing can vary, even on brands you know, due to previous wear or laundering.
To check measurements - Grab an item from your closet that is already a great fit and measure flat across the chest to see if it is a match. Repeat for length.