I've worn this brand of rash guard for 4 years now, and can honestly say for my purpose, it is of superb quality.  I wear it for my aqua aerobics class which takes place in an outside pool that runs year round.  It gets very cold in the winter months (17-32 degrees) and this guard keeps me warm and toasty while pulling in the heat the sun provides each day.  During the past year, this product was moved from production in one country to another with the results being an even better product, more light weight, longer lasting with less drag once it is wet and begins to lose shape.  You could not ask for a better product for aqua aerobics classes.