Use smaller, soft armor with this one - Tru-Spec 24-7 Series Concealed Armor Shirt

I received my shirt secondhand but still new. I am using 6x13 soft plates in mine. My only problem is that the plates pop out when I sit down, and tend to move around a bit. Its nothing adhesive velcro cannot fix but getting chin slapped with a plate when you sit down is a bit annoying. Otherwise, it keeps me fairly safe at work every day.