Product review (2 stars): Rugged product, but Amazon ships used products
The pads seem tough and rugged as advertised.  They should form a good barrier for sound of my large machines.  They are thick and don't smell too bad.  However, beware that although these ship from Amazon LLC, we received a pack that were clearly used.  The box was beat up and so were the pads.  Amazon refused to post my review the first time, telling me I had to leave such feedback in some mythical separate section about the seller, not the product. But of course there is no place to leave seller feedback for Amazon itself -- how convenient for them!  Let's hope they have the integrity not to spike this review, too.