Altering a jeans hem length and keeping the original hem intact is really fast and easy to do. It's one of those projects you can knock out in 10 mins or less. I learned how to do it when I first learned to sew since most of my pants are too long. My legs are shorter than the average, I suppose. These days, I wear most of my jeans tucked under or over as a temporary solution. Yesterday, I was hit with the sewing bug and worked on a pair that was already prepped. Normally, you have to try on, pin and measure before making hemline adjustments. I've been folding the bottom of these jeans so long they have a permanent crease so I used it as my guide.