I was pleasantly surprised at the quality.  It's not easy to find a racerback top that you can wear alone....I find that most are too sheer or too skimpy.  This tank is definitely not see through yet is lightweight and comfortable.  Use a racerback bra and you are good to go.  I would suggest sizing up.  I wear a medium top 95% of the time and I purchased the Large and it's fine.  I could probably even do an XL if I wanted it even looser.  It fits nicely across the chest and not tight through the body.  It launders well and did not shrink.  Would not hesitate to buy again.