WORRY-FREE PURCHASE - FREE RETURN AND FULL REFUND IF UNSATISFIED WITH CRYSTLI 10-INCH MATTRESSES FULL SIZE. Our full mattresses come with 10-year warranty and 100-Night NO-RISK Trial. HYBRID DESIGN FOR ALL SLEEPERS - The CertiPUR-US certified memory foam and pocketed innerspring hybrid construction reaches a balance between firmness and softness.The full size mattress provides the targeted support to your body, proper back support & alignment. No worry about slipping off the bed. STAY COOL ALL NIGHT LONG - This hybrid full mattress is made of high-end knit fabric with a comfortable and breathable surface. The air-flow foam layer has millions of open cells acting as airway chambers, allow maximum airflow so the foam breathes for unbeatable temperature regulation.