Great idea, needs work
I really love the idea of this bag, with the built in wallet, the Kindle pocket, and the tumbler strap. The execution, unfortunately, missed the mark. The Kindle pocket does not fit my Paperwhite, and it barely fits my phone. The tumbler strap fits my 40oz Stanley, but makes it wobbly if the cup is empty, or too heavy if the cup is full. On top of all this, the zipper on the big pouch keeps separating. For solutions, I would not use this style as a tumbler bag, I would make the Kindle pocket a little bigger, and the zipper needs to be stronger.