I'm 6'5" tall. I've learned to live with the average t-shirt that isn't quite long enough for me, but since I've started carrying, I've found I have very few tshirts that offer the concealment I want. They just ride up too easily.
I found a solution.
Duluth Trading offers several shirts in a "Longtail" configuration. (enter "Longtail" in the search field on their website) which give you 3 more inches of length in the shirt tail. Mens or womens, short sleeve, long sleeve or sleeveless, even in a "performance" fabric that dries quickly.
I ordered 2
regular longtail tshirts and 2
performance longtail tshirts.
The regular shirts are a nice heavyweight tshirt and a bit softer than the usual tshirt material. The 3 extra inches on the tail was really nice to have.
The performance tshirts I ordered had a problem. One of them was mislabeled as an XL, but was clearly just a large. The other one fit great and when I tested it outside while building my retaining wall last weekend, I found it to be a lot cooler than a regular tshirt and it dried faster, and was more comfortable than sweating in a regular T.
I called Duluth Trading company up, hoping I wouldn't have to pay for return shipping to get the correctly sized shirt. Not only did I not have to pay shipping, I didn't even have to send the shirt back. they just sent me a new shirt and it get here in just a couple days.
I highly recommend these tshirts, particularly the performance Tshirt if you're going to be sweating. I'll be ordering a couple more before hunting season.