Apart from the cap (which is probably from the seller buying in bulk/OEM rather than boxed retail packaging), why do you think they are not the real thing?
Would go back and look at the Amazon description, as they will probably be described as loose, for the being made in, almost everything is made in CN/nearer the supply of rubber.
If you don't want them, send them back, and go to a LBS and buy retail boxed ones for more.