Jumpstretch are basically the same thing but an inch longer.
From the article:
Iron Woody Short Bands
If you've been reading TMUSCLE training articles for years now, you've probably noticed a theme: a lot of our experts use bands. From dynamic and max effort strength development to rehab and prehab work, bands have a lot of uses, and most of us around here own a few pair. Most of us don't train with them alone; rather, we add them to weighted exercises, like dumbbell bench presses.
We've been using Iron Woody bands for years, the same few pair in fact, and they've stood up to a lot of use and abuse, so we were glad to hear that the Iron Woody folks were offering shorter bands now in 12 and 20 inch length. This is cool because the standard 41-inch bands have to be doubled over for use with some movements.
The 20 inchers are great for benching variations and deadlifts. The 12 inchers work very well for side-to-side walks, the exercise popularized by guys like Eric Cressey and Mike Robertson.
You can get these short bands in widths ranging from .5 to 2.5 inches wide, all of which make great sex toys. And of course, the wider the band, the heavier the resistance. Prices range from $6.50 to $37 dollars a pair, depending on lengths and widths. Packages are also available. Check them out at IronWoody.com.