I am very pleased with the book-bag for the Galaxy S3. The bag stands out visually and protects the phone from all sides. The mobile phone becomes more difficult, although of course that could be a drawback for some people but I was important because otherwise I always had the feeling the phone from slipping out of my hand. The pockets for cards are very well made as the cards fit in well, but make no trouble to take out or fall out by itself.
The only disadvantage is that the plastic is in the strapped the phone is not so beautiful, but this can be seen during normal use hardly. Overall top product at a great price!