A stimulating, not calming, toy
As a toy – the kicker is fine, it crinkles which gets the cat interested in playing with it, but it doesn’t have any catnip scent. If you take out another cushion with catnip, the cats rub against it and relax, but here you don’t get that effect – the crinkling just excites the cat rather than calming it down.
Additionally, they arrived without any packaging, so even if they originally had a scent, there was no chance it would last (after all, it’s herbs, not magic).