The sweat pads in my Montaro helmet were falling apart after months of heavy use (in Texas-it's hot, humid, and sweaty). The main pad no longer stuck to the Velcro attachment points. These new pads made the helmet like new again. And they seem to be improved (more robust construction) over the originals that came with the helmet and the warranty replacements that Giro sent me-but it's hard to say for certain.
The giro montaro helmet, although really nice, seems to get gunked up and smelly after a few sweaty riding sessions. Once it got so bad that it began to irritate my skin. You can wash the pads but that only works a few times... best solution is just to replace them. Although these aren't the same color as the pads that came in my original helmet, I don't care. These are perfect for the job.
Bought the Giro helmet and 6 months later the headband (front) pad was coming unstuck from it's velcro base. Pretty poor! My first Giro helmet and I am disappointed!! Previously had always had good luck with a cheaper helmet, no problems with the padding.