I have found I prefer to engineer my own shorts rather than purchase them from the store, so follow along and learn how pants make the best shorts.
Take a pair of shorts and a pair of pants than turn them inside out. Be sure you like the length of the shorts you are using as your template.
Cut the pants 2 inches longer than the preferred length. This is your folding margin.
Make two folds than pin. Be sure to pin the correct way, so when sewing you can slide the pins smoothly out. The machine will pull the fabric away from you.
Make a single stitch around the entire cuff, but be sure not to tug on the fabric, this may cause bunching.
Create Your Own Threads. Salty Saddles, Pensacola