The following suggestions will help prolong the life of your mattress:
Using a mattress pad or protective cover will help avoid stains, which are not covered by the warranty.
Rotate your mattress to promote even wear.
Use a good quality bed frame (see warranty card for queen- and king-size diagrams).
To eliminate bends in the border wiring that surrounds the mattress, avoid sitting or standing on the edge of your mattress or box spring. Warranty does not cover bent border wiring.