Great product, but FYI this is not a pack of 4, but rather a pack of 1!
Product is great and I have bought it multiple times.  Heavy-duty.  Elastic lasts for a long time. I've even run it through the washing machine and dryer a few times.  Will get a little moldy after using it for a long time.<br /><br />There is only 1 in this package, not 4 as advertised.
Rating: 5 stars