I got the medium. I usually wear a medium. It's pretty snug. Sizing is off.

I have over 10 momentum shirts, and this one is way smaller than the others. I thought I'd accidentally bought XXS instead of XS. I wear a size xs or 2 in everything. Even if I go up 2 sizes, it will likely be too small.

I loved the momentum seamless and was expecting a similar fit, not a shorter version! This one is quite a bit shorter. Definately do not love it.

Comments about Momentum Flex Muscle Tank

Unfortunately this top is extremely small and is not true to size fit. Despite having to go up a size it was still too tight and small. Disappointing

Love the length, style of the sleeve. purchased both in my usual M and a L, definitely keeping the L. This top runs slightly small and does not have as much stretch as other Momentum tops so that even with the grippers at the hem it still rides up a bit. For reference I'm 5'3" 34dd. Bottom line - size up