First impressions are very good. Seems to be very well-built.  It is comfortable to wear with padded shoulder straps in back panel. Zippers are a little harder to operate but works well. Have never seen zippers like this before. They have a coating over the top of them to keep water out. Such a great idea.  I have not worn it out in the pouring down rain yet but have sprinkle water on top and it seems to keep things dry.  This is a nice size backpack with plenty of room for lots of your gear. It has pockets everywhere. Inside the pockets are also other smaller compartments.  Top has a small very soft line pocket for any items you don't want to get scratched.  Has two water bottle pockets on the sides with a top strap to secure them.  Back pocket is quite large and padde.  Around 10.5 x 16.  Great for laptops or other items you need to secure.  There is also another padded pocket inside the back pocket around 10.5 x 12.  Main middle compartment is around 12 x 19. It also has two more zip pockets inside that area. Front of bag also has a zipper that leads to another fairly decent size pocket.  Very versatile. Looking forward to using it for many years to come. Nice investment.