Niggle about your warranty web form (which sent me here to Reviews). The form asks for "Mattress Line" and "Mattress Collection", but neither of these are written on the tag or on our receipt. Instead, we bought a "Copper II" which is not one of the drop-down options. Some lazy manager should try to Register a warranty to see how dumb this web form is. Time to coordinate with the people that write the tags. At least the serial number was on the tag where it was supposed to be.