Overall the material is durable.  I can fit a 16 oz. contigo coffee cup in the pouch.  My iphone with otter box fits in the side pocket with flap, but not on the strap. The otter box makes the phone too big for this space.  I have tried wearing this a few ways, none are real comfortable.  The strap cuts into my neck.  I like the size of the bag and pouches.  My ipad with otter box fit in the big pouch but made the bag heavier than I'd like.  My wallet fit just OK in the second largest pouch.  My wallet is a trifold and the width didn't work real great.  I didn't want to place it in the larger area's and rifle through stuff to get to it.  I'm not comfortable putting my credit card and drivers license in the slots build into the bag.  I wish the bottom had a different material to clean after setting it down in various places.  I want to love it...but I don't.  So, I have decided to return it.