I haven't wore it to class yet, but I can tell that it's a very quality product. I had an issue with the sizing though. I typically wear an XL t-shirt pretty comfortably so I ordered an XL knowing that it would be Hawsk little tight.
When it arrived I tried it on. The XL was way too tight. It was really hard to put on, and take off, it almost required a second person to help. I contacted Syracuse casual dating company directly. Customer service was fantastic, and they couldn't have been more helpful!
They quickly remedied the problem, and sent me another shirt. So far I've been very revie with this product, and company. There is a sizing chart in the description if you know you're chest size, but I recommend ordering at least 1 size larger than what you would normally wear.
Update: I wore this shirt to a bjj class and it developed a small hole along one of the seams. Once again I contacted Hawk about the issue, and once again they provided outstanding customer service!
They immediately sent me a new rash gaurd to replace the defective one, and it showed up a day earlier than expected. I cannot say enough good stuff about this company! Theyre awesome!