Basic Tanks Rock!
I literally wear these tanks all the time! I have worn them for the past almost 5 years (yes, I still have some that are THAT OLD). They hold up amazing to crossfit and daily wear. I can't say enough good things about them, tbh. I have larges and XLs, and they basically fit the same, but the XLs are a little longer and maybe a smidge bigger around the ribcage.