It will definitely be fine. I swim in my GC2B all the time. I don't even wash the thing out afterward (I'm as lazy as heck), and it's just fine. I usually wash it long after it's dried, and it comes out of the laundry the same as before. (I would wash it immediately if it was ocean water, because as a SCUBA diver I know how NASTY anything that's been in ocean water smells as it dries--thank you microscopic ocean creatures!)