These are exactly what I was looking for. I have a relatively long torso and it was great to find these t-shirts that are long enough to stay tucked in all day. With these, when you bend over or sit down, your butt does not show. I am 5 feet 11 inches and weight 173 lbs; the size medium is just the right fit. Form fitting; but, not to snug.
Also, I was looking for a lighter-weight t-shirt, which would be the base for several layers of shirts and/or sweat shirts that I usually wear. These are great because they can absorb some sweat as necessary but, are not too hot when I am physically active.
Made in El Salvador, with very good quality cotton and excellent workmanship. Much better than the Made in China t-shirts I bought last year.