Most brand name mattresses purchased through an authorized retailer usually offer a 10-year warranty on any defects in materials and craftsmanship. That is an exceptionally long time that your investment is protected in case something goes wrong.
A mattress warranty usually covers defects that involve the coils or the core of the mattress. Although warranties can range from manufacturer to manufacturer, they typically cover any sagging that is beyond the acceptable amount as per the warranty. If your coils break or the mattress becomes deformed it will usually be covered.
You can contact National Mattress or the manufacturer directly with any warranty concerns within the warranty period.
