The problem you may face with this item, if you're not familiar with neoprene, is that it feels too tight & sticky. Unfortunately, the photos don't show the inside of it as it has the neoprene (a foam-like layer) which you may not expect. Moreover, the photos show the item as loose, or at least relaxed fit on the model which is totally misleading.
This item is intended to be tight fit only although it gives a good deal of relax after the first use, and is a real great value in comparison to other brand names, especially, with its water proof ear phones & case.
The wrong impression you get from the photos is the only thing that may let you return this item. I decided to keep it after I got used to the texture of neoprene, so don't give your judgement rapidly on this item.

For the SO price I had to buy this on principle as it was less than a rash guard. Surprisingly it's pretty sweet. I wouldn't surf in it, I just think the center zipper is awkward for surf, but for SUP it's perfect. There is a zippered stash pocket in the back. Comes with mp3 dry bag, works well enough I keep my iPod nano inside. Headphones aren't great sounding but they do the job.
The neoprene is a poly blend I haven't seen before. It doesn't breathe very well but insulates a bit which is great in wind.

Extra large was to small. Material and quality was great. sound device pocket was to far back on left side. It was difficult to put water proof pouch back in pocket. The headphone connecting wire is so short in pocket it must be connected and zipped up before you put the rash guard on.  I use music and a tracking application while paddling.  I don't start program till I start paddling.  I used my own external ear buds and it worked great. I returned the Rash Guard because it did not fit.