Review (2/5): Works great for wearing jeans with different heels heights
Update: I can no longer recommend these. At first I loved them, but they can only be used once or twice, and then the two parts lose their ability to stay together. The piece that goes on the back just won't hold onto the post. Buy these only if you're willing to consider them to be disposable.
HOW TO USE: twist while pulling apart. There's a little indentation on the side of the post; if you don't twist, they hold tight.
Hem Gems work great for me. I just turn the pant leg under, and put one of these at each side seam. I used to use double-sided tape, but it really wasn't strong enough for denim. The embossed words and design are appropriate for jeans, but I wouldn't use them on dressy pants.