Sorry to hear of your dissatisfaction with this product.
We can assure you that this item is brand new and has not been opened or used in any way.
Sometimes, there can be a slight residue as a result of the manufacturing process but this is easily removed.
These are also one of our best reviewed, premium mat sets so I can only assume that you have a faulty set.
We have contacted you to arrange an exchange or refund.
Apologies again for any inconvenience caused.
