I'm absolutely delighted with this bag. I love how nice and clean the lines are, and the size is perfect -- not too big, not too little. It ends up being a medium-sized purse, measuring 12 inches wide at the bottom, 10 inches tall, and three inches deep.
The pattern is by Sweet Pea Totes. Although you can buy it on Etsy, there is actually a Simplicity pattern, too. I'm not sure if there's a difference, but I used the Simplicity pattern. The only mods I made was to insert a bias trim along the front flap and top panels. Otherwise, I followed the directions as written, including two patch pockets on the inside.
There are two strap options, one with a simple short strap. Option B has the adjustable strap, which is the one I picked (from 18 to 33 inches). The strap ends up being just long enough to wear cross-body. Wearing the strap short (as with Option A) probably looks a lot more stylish -- sorta Audrey Hepburn-esque -- but wearing it longer is probably more practical (in my case).