A few weeks back I got the shirt and pants. Other than trying them on, I've not done much with them.
But here's my preliminary thoughts. I like the shirt, it is what it's supposed to be. Typical I wear XL to maybe a L tshirt so I ordered the XL. It's roomy enough and feels relatively true to size. In XL, on my frame it's not a form fitting tight fit. A Large probably would have worked if I wanted that tight fit to prevent bunching and overlapping under a PC or whatever. It does not have padddee elbows, a downside for me, but if using these with other elbow protection then it's a positive. Overall I'll keep it, just use it a bit differently than some of the others.
I mistakenly ordered XL pants, should have purchased a L as I'm more of a 36. There is no way of tightening the waist like BDU's or any sort of elastic. I could almost wear them with a belt but there overly roomy. Chalk that one up to being burned by smaller than normal sizing on other BDU type of pants I suppose. But their otherwise what their supposed to be, upon just a cursory inspection.