I bought these for exercising.  I wanted something bigger and longer to cover my stomach and thighs when exercising.  Nice slinky fabric, makes it easy to move.  I bought several and they do run large.  I normally wear a 2X and thought the loose fit that same size would work well.  It's really big.  The next time, I was a little skeptical since I was going from women's sizing to an XL.  But, I tried it and it works.  However, I think I'll next time I might try the L.  I thnk it runs about 2 sizes over.