It is my own pattern. All I have is some notes I have made as I experimented making them till I got it the way I wanted. These are my final completed they way I like ones. I sure did make a lot of prototypes. I will try to see if I can put the directions in a tutorial, but have never done it so any tips will be appreciated. There are 6 outside pockets formed by the straps, one inside zipper pocket and 3 other pockets on the inside.