I'm 5'6" and about 128 lbs. -- small or medium?
1357884
If you are 36" around chest area or bigger then I'd definitely recommend medium
1357885
I think you would be a small. I'm 6' 200 lbs n I got a large. Hope this helped.
1357886
I love the vest, but it tends to run small. Unless you are quite slim order it just a little larger than you might think.
1301655
Yep, I agree with others, a medium. I'm 5-4 and 125 and the smalls are snug.
74884
I am very much your same weight as you are and small is a little tight. If you prefer a loose fit go for the medium.
1063804
Is say small but they may be a little short on you. I'm 5'6" and got the medium and the length was just barely long enough.
375318
I think a small would be okay. My son was about 5'8 and 130 lbs when I bought it and he's now 6'1 and 150 and the shirt still fits. He is slim.
825246
I'm 5'7", 135 pounds, and I got a size medium. So I think a medium should work
1262986
I am 5'6" and weigh about 115 pounds, I got a small and it was a bit too small on the armpits. I am sending it back and trying a medium., The small is more of a child size
331360
I'd go with the medium. got it for my 5 year old last fall and it was a good fit with room for clothes underneath.
478092
Get the small as the neoprene stretches. I am only 5'6" myself and the small is perfect
703994
I'm 5'2" 115lbs I should get the small, but the medium was waaaaay too tight.
1843441
I'm 5'7", and 170lbs. I bought large without them being too big. You'd probably be fine with medium.
825247
I'm 5 5 and 130lb. I got a small and I should have gotten a medium. I'd go medium if I were you.
1481732
I'm 180lbs and have the medium. I would suggest you get the small. It still may slide down with vibration, because the design. It's a great product by the way!
842492
I'm 5"10, 152 and the Medium is just fine. Sounds like we're about the same relative size. This is a compression fit, so it has some "give" to it.
252266
I would recommend a small. The material is stretchy and a medium may not provide as much support.
199497
I am 5'4'', 120lb. The medium fits me well because I do not like tight clothes. S should be good for you.
477642
I am 5'7" and weigh a bit more than you at 152 and I wear a small which fits me tight but not uncomfortable, a small might be just fine for you.