Well made, tight fit. - Undertech Undercover Ultimate Compression V-Neck Concealment Holster Shirts

Well made, tight fit. I wear a medium in undershirts and sweaters, etc. Based on other reviews, I ordered the large and it fits tight. Not too tight, but it is tight. I haven't wore it out and about yet, but it feels like it would be very hot to wear and sweaty under anything, other than an open shirt or jacket in the summer. But then you wouldn't want to take that outer garment off, say in a restaurant. Wish it was a cotton shirt except for the holster section. It does hold my Shield very well and other larger pistols without fear of them falling out. Conceals well under the arm. Overall very well made, but not sure about it's summertime uses in all outings.