In this photo, I think only the back yoke flap and tops of the arms are water treated.
A photo of the shouler and under arm portion. You can see the under arm/side is a slightly darker color than the chest and top of the arm.
A photo of the sleeve - the bottom side of the arm is on the left.
The hood is made of Glyde and there is no way to stow or roll it up - it's either on or off. I think for $128 you should be able to zip the hood into the collar or at least roll it up and fasten it so it's tucked away.
There is no cord pass-through for your music player. I think that is a major oversight, especially at a $128 price point. Maybe I am behind the times in that I haven't made the move to wireless blue tooth headphones yet but not having to deal with remembering to charge yet another item before a run keeps me happy with my inexpensive Yurbud Inspires.
On the good side the luxtreme used in the pullover is very thick and substantial. I didn't care for the horizontal seam across the chest and the yoke at the neck. I much prefer the simple look of the back of this pullover to the front. The fit is snug and you probably want to size up in this.