Sweat may be the "cologne of accomplishment" but who wants to smell like it? Ever notice that sometimes your workout clothes (especially tight tees and tank tops) stop smelling fresh? This Penguin Sport Wash works like a charm. I had some samples in one of my 5k race goodie bags so I gave it a try and loooooved it! I noticed the difference more in my tech fabrics than in cotton, but I still wash both in it. Everything gets nice and clean! And, it's safe for the environment. You're welcome ;~)