Not enough people put their body dimensions on here to make sizing an unseen/unknown shirt easy.
I'm a guy - so I don't care if you know my specs - here they are:
6' 5" tall
23" technical torso measurement (back of neck to waist line)
21" armpit to waist line
18" pythons (biceps for you skinny hipsters)
Usually I buy shirts in 2 XL, 2 XLT, or 3X.
Normally I buy shirts with the "tall" designation since my gut sticking out typically makes a "non-tall" shirt rise just to the point of showing skin when I lean back or reach up with my arm(s). No one wants to see that - unless that is your "thing"
I went with the 2XLT version of this as a baseline.
100% cotton shrinks even if it "preshrunk." Pre-shrunk does not shrink as much, but there is a noticeable shrink none the less.
New from package w/ no wash - length was fine - fit was snug, but not too much to show off the moobs or gut too badly.
First wash - length still fine - fit was too tight - moobs and gut sticking out like an over packed sausage - not flattering.
-You can pull the shirts to stretch it out to be less form fitting, but I don't want to mess with that after every wash.
Returned both 2 XLT's and went with a 3X regular length.
3X reg length is good enough (unless reaching with arms up as far as I can) - fit is quite loose on the moobs and gut (read comfortable and flattering), but not to tent proportions.
Shirt really is heavyweight and I love it. Can't see through it and looks like it will last a while, just like most Dickies items do!
Pocket is a touch too tight/small for my Galaxy S5 with case since they seamed in a dedicated pen/pencil pouch inside the total front pocket dimensions. As is, it is good enough to hold a couple pens or something along the size of a deck of cards.
Ask your grandma, mother, or wife for a seam ripper to remove the Dickies tag on the front pocket. If they are good with the stitch, ask them to rip out the dedicated pen/pencil pouch and the pocket becomes big enough for a smart phone.
I used to buy Fruit of the Loom Men's Short Sleeved Pocket T-Shirt from both the Normal and Best collections since they used to be available locally in a "mart" store. That Wal place doesn't carry the front pocket shirt in my sizes anymore so I found them here on Amazon. FotL changed their material/construction practices with this shirt recently and they are bad quality, even at $5-$8 a pop. They lasted me about 6 months of 1-2x/week use and one weekly washing before fabric was worn thin and piling badly. They are now dedicated "I don't care what happens to them work shirts"
I am a fan of Dickies items and I would say that these shirts display overall good quality and with some modifications done at home I would highly recommend them.
Heavyweight 6.75 ounce short sleeve pocket tee with tag less back neck for comfort