I have been making quite a few of these super simple flat pouches in different sizes, for slim rectangular objects like cameras, smart phones, portable GPSs etc. In the process, I have developed a very simple formula to easily determine the right pouch size for a nice snug fit. These only take about 30 minutes and make great gifts. There is also an ideal project for beginners as they are so easy to make. If you do have to make a choice on which size to try, a larger pouch (e.g. iPad) is a little bit easier than the smaller ones (e.g. smart phone). To make the pouch you will need: 4 rectangles of fabric: 2 for the inside, 2 for the outside. 2 rectangles of fleece fusible (iron-on) interfacing. I use Vilene H630 for small pouches, and Vilene H640 (which is a bit thicker) for the larger sizes, like an iPad case. optional: 10cm elastic + 1 button So here is how you determine the size of your fabric pieces: 1. Measure the circumference of your product in both directions (just loosely, no need to pull tape measure tight) 2. Add 5 cm (or 2