Space and time are mostly curved. As long as you follow the curves flat is the same as warped. You just have to fit your space-time continuum.

If I read the description right, he belly flattener has a set of plates for flat bellies, and another set for the curvy ones. Take your pick on which to use depending which kind of belly you're trying to take the bulge out of.

The biggest problem with the kit as described is that they specify "heat the plates to 150F" and getting an accurate temperature before applying the fixture may be a problem without some "accessory equipment. For a home-shop fixer, a regular clothes iron turned upside down to lay the plates on might be accurate enough for the heating in the needed temp range, with a thermometer to check the setting; but since OSHA got in on the act most recent model irons shut themselves off if you turn them over. Some even shut off if you leave them in one spot right side up long enough to scorch your skivvies.

John