What does inverted float method mean?

[Illuminati]

I have been seeing the term "inverted float method" pop up more and more but don't know exactly what it means.

Anyone know?

Thanks

[Kigs]

when you rubberband a piece of styro on the bottom of the frag so it stays submerged in water more effectively during shipping

[Illuminati]

Thanks kigs, learn something new everyday :)