I'm 5'4", 140 lbs with a chest of 34" so I went with a small and it's a super tight fit. It's my first time buying a shirt like this so I'm not sure.
138263
I like them to fit like a wetsuit which is pretty tight. You should have to "roll" it up off your back when you take it off. Sounds like you have the correct size.
2126659
5'7'' 165lb 40 chest, 31 waist. Picked up the medium and its pretty tight. Thinking about switching to large.
13925
They stretch a ton so if you go with the smaller size he will probably be fine. That being said I did buy mine a size smaller than a normal shirt size because I was anticipating weight loss. It fit me at 40lbs heavier and still fits me now.
2171835
I wear small size but can wear medium though the shirt would hang past my waist, but underarmour fits tight, and I actually had to upgrade to a medium because it was so tight I had a hard time getting it off to the point that a seam was starting to go. I suggest going a size up.
136168
Well, in addition to the very precise answer by D. Beatty, I think this is somewhat like to buy a shirt. If it is for yourself, I believe you will know which size fits for you. If it is for someone else (that was my case), it is not that difficult to guess and choose between small, medium or large. I bought it for someone else who was not present and it fits perfectly. And, besides, it is somewhat elastic, so small differences in the size are not supposed to be a big issue.
632904
With all UA, depending on if you are okay with having clothing tight to your body, loose, or just having some give. I bought mine with having some give but it fits snug. I have a 38" chest and very broad shoulders. I fit snug up top and some give at the bottom with a 34" waste. I bought an XL. Just going by your waste you may want to try a Large. But that may confine you up top. The tops do have a no slip strip at the bottom of the shirt so should you tuck it in, it stays in place. I hope I helped in your decision, and answered any questions. Take care.
1443901
I'm 5'11" 170 lbs and got the large. I have it tightened pretty small. Depending on your actual chest measurement-I would stick with a med. They are really popular right now and all sizes may not be available. Totally worth the wait or check out their homepage.
299820
Hi Nicole, are you happy with the small or would an XS have worked better for you? I am also your about size (5' 6", 114 lbs, with a small chest and shoulders). Thanks! -Maria
51259
I will go small, but It may fit perfect not too adjust not to tight, but depending on what you want it for. If you want it tight, go x small if possible.
300126
I have a fairly large chest, pant size 36. I buy large and it's pretty snug but that's how I want this kind of shirt to be. Going off of the pants size I'd assume he's a little bigger than I am so I wouldn't go any less than XL. (If he wants it snug) I'd also suggest maybe going to a sporting goods store and trying them on then buying from Amazon.
127775
You should be a SMALL... This is UA's MEN'S TOPS SIZE CHART - Chest (inches) SM = 34-36, MD = 38-40, LG = 42-44, XL = 46-48, & XXL = 50-52
612827
I'm 5'9" 208 lbs. and I bought the XL. This is a compression shirt so it will be tight. I prefer it that way. Good luck.
271928
Well the small is pretty tight, there is a lot of padding, and I am a marathon runner so I am pretty small in the chest. Haaa
434279
Hi, I think small would be too tight for u. I bought the small I am 32 waist. It has fit perfectly for me. 33/35 waist would be too small in my opnion.
90990
I'm a male, 5'-9" with 40-inch chest, 30-inch waist (175cm tall, 101cm chest, 76cm waist). The small just fits OK with a thin shirt, but not with a sweater or parka.
1752578
Officially, yes. The sizing seems to run small. If you have an ample chest like me, then it will be a TIGHT fit.
2148430
Mine is size small and pretty large on me. (5'6", 140 lbs). I would have ordered XS but they didn't have it.