It can be difficult to find a tank that isn't cut too low at the neck and under the arms.  I'm 5'4" and normally wear a ladies XL and mens L in t-shirts so I took a chance and ordered an XL in this tank.  It fits perfectly.  I won't have to wear another tank in order to lean over or simply move.  PLEASE NOTE: this tank does not have a hem around the bottom so it may do that funky roll-up thing after/with washing and wearing (I've done neither yet).  Also, I ordered "black heather"; it's definitely a charcoal grey heather.  Not sure if it was a mix-up or if that's what the company's "black heather" looks like.