Heritage Fit is pretty much a slim fit.
343605
If you order a heritage fit shirt I would get it in a size larger than you normally wear. I normally wear a large and  ordered the XL. It fits well.
1019065
The waist is lower than expected and there is something odd about the shape, they feel "Slim-Fit" at the waist but baggy in the hips and buttocks.
The faded look is a little too "pre-worn" and does not look authentically pre-washed.
The price is fair considering the denim is rather thin.
The legs are not tapered enough to be called a tapered leg.
357388
Love The design, but the fit is... Well..  Weird, I guess. Somewhere between regular and slim, with a pretty fair length (which I'd say is what they call "modern fit"). Plus, the cotton is definitely not soft. Can't really say it's a comfy tee.
3781261
it's from China so I guess they are slimmer then average American.  it fits regardless.  my child on a skinny side.
770075
While it's not bad and the build quality is nice, the fit is very awkward.
This is the second shirt I've reviewed from oxford NY and they are both really short and baggy. The rest of the fit, around the shoulders, neck and chest is ok and more like what you would expect the whole shirt to fit like.
The fit around the waist is still very boxy. The shirt hangs really loose and kind of bulky around the waist.
I have a medium, athletic build, more on the slim side, I'm 6'4", 210lbs.
So the shirt is too short in length, to loose in width and just awkward all around.
The blue is also a very de-saturated or greyish blue, it's not bad but not a very flattering color.

Again, I can't really complain about the quality. I feels nice and looks well stitched, but the overall cut and fit is just not there.

I think if you have a shorter, bulkier build this shirt would probably be a great fit.
If you're tall and slim it's probably not going to be what you're looking for.
2825396
Yes it is a nice fit. I do need to get in shape to make it look better, but it's okay.
1024933
Excellent slim fit while having room in the chest so I'm not popping buttons up top.  Fresh from the package this things looks like a perfect Friday-Night-Out shirt,  but after a couple wash it looks more like a perfect Thrift-Store-Treasure.  Not bad, but it sure lost color and looks worn fast.  I'm not sure how it will hold up in the long run, the loss so far is just cosmetic and it still feels wonderful.
1385293
I wear a 46-48 jacket (depending on the cut) and the xxl is a little snug across the chest, but it does fit (over a shirt and under shirt).  It is a little bit shorter than I would have liked... I'm only 5'11" and it sits just above my belt buckle...  so wear a nice belt with it and you can show it off.  Personally I was hoping for a little more room and a little more length, but it'll work for now.

Overall, the fit and finish is about what I expected for $30.  It's lined, but it's very thinly lined.  The material looks kind of cheap (to the casual observer it's obviously a poly material).  Best worn with jeans rather than nice, wool slacks.
1915200
Compared to the Old Navy alternatives, these do not have as much flex and their colors are not as bright or defined. They are a bit more faded and jean-like.  The fit is slim for sure and the length is exactly 31".
135673
Very light-weight material. Pretty fat in the waist for a "Slim Fit."
1525584
Not sure what their definition of slim fit is, but these are not slim fit. They fit like classic dress pants with no tapper below the knees. They are decent looking pants, but they are way too baggy below the knee. I didn't want skinny jeans, but some narrowing below the knee would have been nice. These are standard dress slacks, not slim fit.
4467498
Overall, the product is good quality and fits as described. I will say the fit down the legs and rear is a bit baggier than I had hoped. If I had to do it again, I'd opt for the Haggar slim fit to tighten up the pants. If you're looking for a more traditional fit, these would serve the purpose. If you're looking for a bit more fashionable, narrower style, look elsewhere.
3967086
My husband bought Hanes sleeveless shirts in a department store that are so narrow because the young guys like to wear them as muscle shirts.  When I saw there was a difference between the traditional fit and the more modern fit I decided to order some.  He likes them better, but feels that the older ones he was used to were a more roomy fit.
2341583
Bit slimmer fit than most hoodies, decent enough quality for price.
1966750
Sleeves are a bit longer than I'd expected from the measurement given, but other than that, if you order a sleeve length an inch less than your standard measurements, I think you'll like the fit if the waist fits your gut. I have a feeling that this is the "new" regular fit. I will personally be purchasing a slim fit shirt next time, but if you have a bit of a gut, this shirt will suit you better.
4630165
4 stars because it is not a true slim fit. Looks like it could be slightly tailored, but definitely not slim fit. Great material. Iron free. Fits as expected for classic style, but not slim fit. Used for work. I would buy this again if it stays on sale for 35 dollars. If it goes back up to the original 69.99, no. Great shirt.
435434
For the price, it's not too bad in terms of quality. Right out of box, the material feels very stiff but will probably soften after a wash. Sadly though, I'll be returning this. I usually fit pretty well in most US small size in slim fit. In comparison, this shirt is slightly on the shorter side. The sleeves are definitely short - they stopped maybe half an inch to an inch short of my wrists. The cut through the torso feels more boxy than slim. It does taper in the mid-section but gets pretty boxy towards the end.