It is super cute but runs small. I weigh 119 lbs and I usually wear a small and I had to exchange it for a medium.I got this shirt to run in for indoor track, but we actually practice outside so its very cold. All the reviews said to size up so I got a S instead of an XS. I think that it was a little loose but it still looked really good. I think I would have been uncomfortable if it was skin tight. The sleeves might have been uncomfortable too. I'm about 5'4 and 107 pounds for reference (teenager). This shirt is cute, comfy, and is great quality so far for the price. I like how its a little tighter than a normal long sleeve tech shirt but not to tight to the point that it hard to run in. I got the gray one and loved it so much that I went and got this redish brown colored one. Don't let the lack of reviews stop you from buying this shirt.This material is pretty thick. Great color and stretch. I gave it 4 stars because it bunches up a little bit around the neck. It's not terrible but it is there. I ended up keeping it because I desperately looking for a workout top for the colder mornings.Overall I really like this top but there are two things worth noting: smell and size.1. It isn't a big deal for me because I'm sure it'll come out in the wash, but the smell of this top is the worst chemical smell of anything I've ever bought. It's just so bad I can't not mention it.2. As other reviewers said, this does run pretty small and tight and I'm glad I sized up to a small rather than going with the XS. For reference, I'm 5'4" and 105lbs with shoes on so I usually opt for the smallest size offered. With that said, I'm really glad I trusted reviews and decided to size up. The small is plenty, plenty tight and gives me the athletic, snug look I was expecting. I imagine the XS would feel more like spanx and would dig in.Overall, I really like the top, just be sure to size up and wash it before wearing!I would recommend you size up in this product. I usually wear a medium but I purchased a large instead because the material looked tighter and I’m happy I did, but it also has stretch to it. I love everything about this shirt except the sleeves on the forearm are a little itchy.I love it. It's pretty tight but I assume it's because it's a workout material. It has plenty of stretch. I would recommend buying one size up. Other than that it's awesome. Would have been 5 stars but it doesn't come with pockets.First off, love the top. It's great for HIIT workouts with being just a tad on the warmer side. Size - I wear a Small in just about every top. I saw reviews to size up so I purchased a Medium. The medium is great other than it slides up (I don't have a long torso), but it is VERY form fitting. I am 5'8, 128lbs, 32D and 27" waist. I am going to try a Large in this next. Sleeves are also a good length.