Size matters

I ordered this product from a third-party partner. While the tank was of excellent quality, there is a distinct sizing issue with the product. I ordered a medium, but could barely get it over my shoulders. Once I had it on, it was like being encased in a sausage skin. Since there is no sizing information on Amazon or at Athletica's site, I decided to send it back for a refund rather than take a chance and exchange it for a larger size (I sincerely doubt that a "large" would have fit either, given the cut of the product). This is the first time that I have ever had to send anything back, and am very disappointed. In addition to the size issues, Athletica did not report back to Amazon that it had received or fulfilled my order in a timely fashion, so Amazon sent me an "alert", encouraging me to contact the vendor directly. Then, it took Athletica two weeks to credit back my charge account, which occurred only after I submitted a claim through Amazon. A total fiasco.