Teflon, the nonstick element commonly found in cookware, is also found in Sealy mattress pads.The application of teflon or polytetrafluoroethylene makes it stain resistant and more comfortable. Although, according to The Mattress Lady,

This too is true, but mainly of the outer fabric that gets the Teflon treatment. A coating of Teflon on the top surface fabric of Sealy mattress pads with Teflon does not prevent urine from soaking through the mattress pads. Stains and odors will develop inside of the mattress pad and show through the top layer, unless the mattress pad is properly cleaned.

She also outlines a few concern as well as smart buying tips when it comes to mattresses treated with Teflon, which, unfortunately may not be only exclusive to Sealy:

One concern the author has about mattress pads with Teflon is the offgassing associated with Teflon. Teflon is marketed as an inert surface, but what kind of offgassing is there? What does that do to your health? The jury is still out on all of that.

And before buying Sealy mattress pads with Teflon coatings, remember that it’s just a Teflon coating on a mattress pad. A lower-priced no-name brand mattress pad with a Teflon coating will provide at least as much protection against staining and sleeping comfort as Sealy mattress pads with Teflon.

Instead of buying Sealy mattress pads with Teflon, or any other brand, it may be best to simply learn more about the proper care of mattress pads in general. When a mattress pad is stained, urine is often the culprit. Wash the mattress pad immediately in warm soapy water. If possible, let it dry outdoors in sunshine. Sunshine actually has a bleaching effect that can make urine stains vanish. And when all’s said and done, remember that mattress pads are hardly ever seen.