Serta iComfort® Memory Foam features zoned support from memory foam layers for contouring pressure-relief and breathability. With alternating levels of firmness, ergonomically design support zones in every Serta® mattress are designed to keep your body aligned as you sleep.Plush - Great for side sleepers for extra comfort at the shoulders, hips and lower backCoolFeel™ Fabric keeps you comfortable throughout the nightOur PerfectConform™ Memory Foam contours and cradles your pressure points for rejuvenating sleepOur 5 ZoneResponse™ Design provides head-to-toe comfort and support for restorative sleepYour new mattress may initially feel firmer than expected. Please allow up to 60 days to acclimate to your new mattress as it naturally adjusts to contour, comfort, and support you bestCertiPUR-US(r) CertifiedDesigned and Built in USAAdjustable Friendly10 Year WarrantyMattress Top Type: Tight TopMattress Type: Memory FoamIncluded: 1 Mattress(es)Features: Cooling Layer, Full Support, Zone Quilting, Cushioning Layer, Foam Layer, Temperature RegulatingAdditional Information: Eliminates Motion Transfer, Conforms To Body, Relieves Pressure Points, Suitable for Adjustable Bed FramesManufacturer Warranty: 10 Year LimitedBed Size: Twin XlMeasurements: 38 Width/Inches, 13 Height/Inches, 79.5 Length/InchesMaximum Weight Limit: 850 LbsBase Material: 100% FoamComfort Type: PlushCare: Spot CleanCertifications And Listings: Certipur-Us CertifiedMattress Height: 13"Country of Origin: Made in US Serta iComfort Memory Foam features zoned support from memory foam layers for contouring pressure-relief and breathability. With alternating levels of firmness, ergonomically design support zones in every Serta® mattress are designed to keep your body aligned as you sleep.Plush - Great for side sleepers for extra comfort at the shoulders, hips and lower back.CoolFeel™ Fabric keeps you comfortable throughout the night.Our PerfectConform™ Memory Foam contours and cradles your pressure points for rejuvenating sleep.Our 5 ZoneResponse™ Design provides head-to-toe comfort and support for restorative sleep.Your new mattress may initially feel firmer than expected. Please allow up to 60 days to acclimate to your new mattress as it naturally adjusts to contour, comfort, and support you best.CertiPUR-US(r) Certified.Designed and Built in USA.Adjustable Friendly.10 Year Warranty  Includes mattress only. Mattress plus box spring option also available. Serta iComfort® Iona 13" Plush Memory Foam - Mattress Only