I bought this because it was used in the bodyrock videos. I loved their workouts but decided to try them a couple of months before investing in any of the equipment they used. Two months later I bought the 10lb Ugi in Steel,
Ugi Fitness at Home Kit and the dip station,
Ultimate Body Press Dip Stand and this sandbag. They really upped the challenge and maximized my results.
It was a little pricey but I do think it has been worth it. This is the one item I have gotten the most use of. I had originally purchased this one
Ultimate Sandbag Training: Strength Shell ONLY with the interior bags separately but as a 5'4 female with a small frame, not filling it up to its 80lb maximum made it sag somewhat. This more compact one worked better. Its so versatile and you can incorporate it some way into most of your exercises. Using this in natural body movements versus the limited range of motion you get from the machines at a gym allows you to use more muscles where you can potentially burn more calories and you get a better rounded work out overall.
Another great thing about it is that you can take it with you when you travel. When I went on vacation for three weeks, I emptied the sandbags and took it with me. Sand is not hard to find so I was able to fill it out there and use it.
I've bought a LOT of exercise equipment over the years and I have to say these three items are what I consider to be my best investments based on their cost, how much use I get out of them and the results they yield. If you are also a body rock/Zuzana fan and are wondering what equipment to start with, I would say that you start with the sandbag, followed by the UGI, then the dip station. The sandbag is the most versatile, in my opinion, because 1) you can vary the grip and incorporate it into more workouts, 2) You can vary the weight so that you can get a much more challenging workout with it if you wanted where as with the UGI you are limited to whatever weight you bought. 3) You can take it with you when you travel so you don't have an excuse to not work out. The dip station is also a good buy and great for ab workouts but, again, is even more limited in its use. You can only do a number of things on it a certain way. But I can honestly tell you that adding these items to my workouts maximized my results.