They are are 'stronger' or "firmer" to keep the bin lid open better when now lifted with the protector added on. I did mine after leaving the original ones on but they didn't hold the deck open. With the new ones, it held open fine.
http://www.infinitiqx60.org/forum/n...n-forum/79186-cargo-mat-photo.html#post108274
http://www.infinitiqx60.org/forum/n...n-forum/79186-cargo-mat-photo.html#post108274