This class showed us how to put in an invisible zipper, a placket zipper and a separating zipper. The teacher was incredibly knowledgeable and made a point to not move on until everyone had gotten a chance to sew in their zipper. We could bring our own machine or use Haberman's. The class was a 3 hour class and in that time we only were able to do the invisible zipper and the placket zipper. I wish it had been a longer class. I learned how to make my invisible zippers truly invisible and can't wait to take out the zipper of the last thing I worked on and re-input it using the techniques I learned. I'm so lucky to live close enough to Haberman Fabrics to take classes!