The Walk Vest is a weighted vest one can wear to burn extra calories, while moving about.  This gadget has become so popular, that competitors are coming up with some similar ones of their own:

1. The Walk Butt Pads (bulging pads of lead to not only motivate you to lose the badonkadonk you see in your mirror, but also weighted to burn where it counts).
2. The Lead Head (a brace around the head that, when used carefully, can burn calories around the head and neck – appropriate for anyone who considers themselves a meathead. Caution: Do not turn head too quickly otherwise, you may suffer from whip lash. Led Zeppelin fans are already interested in this product for the mere name alone.)
3. The Thunder Thighs Shields (weights along the thighs, which will make you feel like you are on valium when you walk. After taking them off, you will feel like you are walking on the moon, literally.)
4. Jelly Role Bowl (a bowl-like shape of lead around your mid-drift that makes your stomach get a peak work out. Careful not to lose too much of your spare tire, otherwise the Jelly Role Bowl may slip down, falling to your feet, crushing your toes.)