When I used to sell bags at home parties I would very often encounter someone who had to have their bag closed at the top. Many wanted a full zipper. After trying many times to come up with a nice zipped closure, this is what I have settled on. These instructions will work to modify any straight topped or slightly curved bag. The exterior of the bag will remain the same while the inside of the bag is what will be altered. Zippers can be really confusing so as with any of my patterns, if you can't quite figure out a step feel free to email me with your questions. BASIC SKILLS NECESSARY Understand basics of sewing with a sewing machine. Basic bag construction knowledge will help but it's not necessary. SIZING / FINISHED MEASUREMENTS This will recess your zipper into your bag approx 2".