The mattress of your dreams is here! Serta's Slumber Oasis Plush Eurotop Mattress provides 8 of cooling, supportive pressure-relief. With breathable CoolTwist™ Gel Foam that conforms to your body, and cushioning Serta® PillowSoft™ foam, you will be left wondering why you didn't choose this mattress sooner. Grounding all of this are 391 SertaFlex™ InnerSpring coils that ensure excellent support along your entire body.