I have owned 4 ballistic panels from Premier Body Armor and from the first pair of 10x12 panels, to my 11x14 and this 10.5×13 Haley panel I have never had
complaints whatsoever. Premier soft panels are ultra thin due to their kevlar construction, flex with body movement very "fluidly" and are comfortable enough to forget they are even there.
There are multiple options when it comes to level IIIa soft panel protection, and Premier's kevlar panels are thinner, lighter, less restrictive and more comfortable than similarly priced IIIa UHMWPE SOFT panels, which I only tend to use for cummerbund inserts as they are thicker, much stiffer and trap body heat more.
I am a fan of UHMWPE HARD (level III/ level III+ armor for torso protection, but still prefer to place an ultra thin kevlar panel from Premier behind them, but whether it's a steel AR500 hard panel or UHMWPE hard panel, both are more comfortable to wear with a lightweight thin kevlar soft panel behind them and Premier products are slick, sturdy, and all around well made.