{"product_id":"serta-iseries-nxg-mattress-4500-hybrid-ultra-plush-available-in-twin-xl-full-queen-king-and-cal-king-sizes","title":"Serta iSeries NXG Mattress 4500 Hybrid Ultra Plush ~ Available in Twin XL, Full, Queen, King and Cal King Sizes","description":"\u003cstyle\u003e\n.accordion-container{max-width:1200px;margin:0 auto;font-family:Montserrat,sans-serif}\n.accordion-item{margin-bottom:15px;border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;background:#fff}\n.accordion-header{background:#fff;color:#000;padding:18px 24px;cursor:pointer;font-size:18px;font-weight:600;display:flex;justify-content:space-between;align-items:center;transition:all .3s ease;border-bottom:1px solid #e0e0e0}\n.accordion-header:hover{background:#f8f8f8}\n.accordion-header::after{content:'+';font-size:24px;font-weight:300;transition:transform .3s ease}\n.accordion-header.active{background:#f5f5f5}\n.accordion-header.active::after{transform:rotate(45deg)}\n.accordion-content{max-height:0;overflow:hidden;transition:max-height .3s ease}\n.accordion-content.active{max-height:5000px}\n.content-inner{padding:24px;line-height:1.8;color:#333}\n.content-inner h3{color:#000;margin-top:24px;margin-bottom:12px;font-size:20px;font-weight:600}\n.content-inner p{margin-bottom:16px}\n.content-inner ul{margin:16px 0;padding-left:24px}\n.content-inner ul li{margin-bottom:8px}\n.specs-table{width:100%;border-collapse:collapse;margin:20px 0}\n.specs-table td{padding:12px;border-bottom:1px solid #e0e0e0}\n.specs-table td:first-child{font-weight:600;width:40%}\n.cta-box{background:transparent;color:#000;padding:30px;border:2px solid #000;border-radius:8px;margin-top:30px;text-align:center}\n.cta-box h3{color:#000;margin:0 0 10px;font-size:22px}\n.cta-box p{margin:0 0 15px;color:#000}\n.cta-box a{color:#000;text-decoration:underline;font-weight:600}\n\u003c\/style\u003e\n\n\u003cdiv class=\"accordion-container\"\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nSerta iSeries NXG 4500 Hybrid Ultra Plush Mattress\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eSerta iSeries NXG 4500 Hybrid Ultra Plush Mattress\u003c\/strong\u003e delivers immediate cooling, enhanced pressure relief, and cloud-like softness for deeper sleep. Features \u003cstrong\u003ehigh-density NXG Memory Foam\u003c\/strong\u003e for exceptional contouring and pressure relief with ultra plush feel. \u003cstrong\u003eCoolFeel Cover\u003c\/strong\u003e provides cool-to-touch surface while \u003cstrong\u003eCarbon Fiber Memory Foam\u003c\/strong\u003e draws heat away from body. \u003cstrong\u003e5-zone coil system\u003c\/strong\u003e with alternating firm and plush areas supports back and body curves beneath plush layers. \u003cstrong\u003eBestEdge Support\u003c\/strong\u003e provides edge-to-edge stability. \u003cstrong\u003eIdeal for side sleepers\u003c\/strong\u003e who prefer maximum cushioning. Available in Twin XL, Full, Queen, King, and Cal King sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nSpecifications\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollection\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSerta iSeries NXG 4500\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComfort Level\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUltra Plush\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMattress Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eHybrid (Memory Foam + Coils)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTwin XL, Full, Queen, King, Cal King\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoam Technology\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNXG Memory Foam (High-Density)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Layers\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCoolFeel Cover, Carbon Fiber Memory Foam\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport System\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5-Zone Coil System\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge Support\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eBestEdge Support Technology\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotion Control\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePartner Movement Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSide Sleepers\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSerta\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nPressure Relief \u0026amp; Support\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003ch3\u003eNXG Memory Foam Technology\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003ehigh-density NXG Memory Foam\u003c\/strong\u003e provides exceptional contouring with ultra plush feel that cradles body in cloud-like softness. Enhanced foam layers create deep pressure relief at shoulders and hips where side sleepers need maximum cushioning, conforming to body shape while maintaining supportive foundation beneath plush surface.\u003c\/p\u003e\n\n\u003ch3\u003e5-Zone Coil System\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e5-zone hybrid coil system\u003c\/strong\u003e beneath plush layers provides targeted support that prevents excessive sinking. While ultra plush surface cushions pressure points, coils maintain proper spinal alignment. Softer coils beneath shoulders and hips accommodate side sleeping while firmer lumbar coils prevent sagging. \u003cstrong\u003eBestEdge Support\u003c\/strong\u003e maintains stability from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nCooling Technology\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eCoolFeel Cover\u003c\/strong\u003e provides cool-to-touch surface that delivers immediate cooling sensation when you lie down, helping you fall asleep faster. The fabric dissipates body heat for comfortable initial contact with plush mattress surface.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCarbon Fiber Memory Foam layer\u003c\/strong\u003e actively draws heat away from body throughout the night. Carbon fiber's thermal conductivity pulls warmth from sleep surface and disperses it, preventing heat buildup that can occur with plush memory foam. This dual cooling approach maintains comfortable temperature even with deep contouring and cushioning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nCare Instructions\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003cp\u003eUse mattress protector to guard against stains. Rotate head-to-foot every three to six months for even wear. Avoid jumping or standing on mattress. Do not fold or bend. Allow new mattress to air out for 24-48 hours after unboxing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nFrequently Asked Questions\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003ch3\u003eWhat is ultra plush?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eUltra plush provides maximum softness\u003c\/strong\u003e and cushioning beyond standard plush. Enhanced foam layers create cloud-like feel that deeply cradles body. This is the softest option in the NXG line, ideal for side sleepers who prefer sinking into mattress with exceptional pressure relief.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this differ from 2500 plush?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e4500 offers enhanced plushness\u003c\/strong\u003e with more foam layers for deeper cushioning compared to 2500. Both are plush and ideal for side sleepers, but 4500 provides softer, more luxurious feel with additional contouring. Choose 4500 for maximum softness or 2500 for balanced plush comfort.\u003c\/p\u003e\n\n\u003ch3\u003eWill I sink too much?\u003c\/h3\u003e\n\u003cp\u003eNo, the \u003cstrong\u003e5-zone coil system prevents excessive sinking\u003c\/strong\u003e while plush layers provide cushioning. The hybrid design balances soft surface with supportive foundation. You'll experience deep contouring and pressure relief without losing proper spinal alignment or feeling stuck in the mattress.\u003c\/p\u003e\n\n\u003ch3\u003eIs ultra plush good for back pain?\u003c\/h3\u003e\n\u003cp\u003eFor side sleepers, yes. The \u003cstrong\u003eultra plush cushions pressure points\u003c\/strong\u003e at shoulders and hips that cause pain when inadequately cushioned. The 5-zone coils maintain spinal alignment beneath plush layers. However, back and stomach sleepers typically need firmer support to prevent back pain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"cta-box\"\u003e\n\u003ch3\u003eGet 20% Off + Free Delivery\u003c\/h3\u003e\n\u003cp\u003eQuestions about this product? Our specialists are here to help.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"tel:8552233267\"\u003eCall\/Text: 855.223.3267\u003c\/a\u003e | \u003ca href=\"mailto:cs@casabelladecor.net\"\u003eEmail: cs@casabelladecor.net\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\nfunction toggleAccordion(header) {\n  var content = header.nextElementSibling;\n  var isActive = header.classList.contains('active');\n  var allHeaders = document.querySelectorAll('.accordion-header');\n  var allContents = document.querySelectorAll('.accordion-content');\n  \n  for(var i = 0; i \u003c allHeaders.length; i++) {\n    allHeaders[i].classList.remove('active');\n  }\n  for(var i = 0; i \u003c allContents.length; i++) {\n    allContents[i].classList.remove('active');\n  }\n  \n  if(!isActive) {\n    header.classList.add('active');\n    content.classList.add('active');\n  }\n}\n\u003c\/script\u003e","brand":"Serta","offers":[{"title":"TWIN XL","offer_id":44912541106376,"sku":null,"price":2699.0,"currency_code":"USD","in_stock":true},{"title":"FULL","offer_id":44912541139144,"sku":null,"price":2849.0,"currency_code":"USD","in_stock":true},{"title":"QUEEN","offer_id":44912541171912,"sku":null,"price":2999.0,"currency_code":"USD","in_stock":true},{"title":"SPLIT QUEEN","offer_id":44912541204680,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true},{"title":"KING","offer_id":44912541237448,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true},{"title":"SPLIT KING","offer_id":44912541270216,"sku":null,"price":4199.0,"currency_code":"USD","in_stock":true},{"title":"CAL KING","offer_id":44912541302984,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8519\/3928\/files\/Serta_iSeries_NXG_Mattress_4500_Hybrid_Ultra_Plush.webp?v=1769358974","url":"https:\/\/casabelladecor.net\/products\/serta-iseries-nxg-mattress-4500-hybrid-ultra-plush-available-in-twin-xl-full-queen-king-and-cal-king-sizes","provider":"casabelladecor.net","version":"1.0","type":"link"}