{"product_id":"sealy-burnham-extra-firm-mattress-posturetech™-2-0-dualedge™-st-james-bed-centre","title":"Sealy Burnham Extra Firm Mattress | PostureTech™ 2.0 | DualEdge™ | St James Bed Centre","description":"\u003cp\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eSealy Burnham Extra Firm Mattress – Engineered Support, Lasting Comfort\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEvery detail of this firm mattress has been thoughtfully designed, rigorously tested and expertly crafted to deliver long-lasting performance for every type of sleeper.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003ePostureTech™ 2.0 – Smart Spring Support\u003c\/span\u003e\u003cbr\u003eAt its core is PostureTech™ 2.0, Sealy’s new smart spring technology. This is no ordinary spring. The unique geometry responds to your individual body shape to provide deep-down support. Delivering consistent support right across the sleep surface, it distributes weight evenly and helps maintain a natural shape and healthy posture. Using a higher gauge wire for greater stability and performance resilience, it’s twice tempered and rigorously tested by Sealy Scientists to make lumpy, uneven mattresses a thing of the past.\u003c\/p\u003e\n\u003cp\u003ePostureTech™ 2.0 support is combined with 1200 micro pockets and Microcell™ \u0026amp; OptiForm™ to conform and cushion, creating a firm comfort feel.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eDualEdge™ – Maximise Your Sleep Surface\u003c\/span\u003e\u003cbr\u003eDualEdge™ pushes the boundaries to maximise the sleeping area of your bed. This unique innovation supports the spring system, reinforcing both the sides and edges of the mattress, stabilising every inch and extending the usable sleep surface. Whether you prefer sleeping right to the edge or need somewhere to sit while putting on your socks, DualEdge™ makes the most of your mattress.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eIntelligent Comfort Architecture\u003c\/span\u003e\u003cbr\u003eEnhancing the support system is a premium layer of comfort technology designed to work in harmony:\u003c\/p\u003e\n\u003cul class=\"list-inside list-disc whitespace-normal [\u0026amp;\u0026gt;li]:ps-6\" data-streamdown=\"unordered-list\"\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003e1000 Micro Pockets\u003c\/span\u003e: Individually contour to your shape for enhanced comfort and tailored support\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eMicroCell™ Foam\u003c\/span\u003e: Durable and resilient with an open-cell structure that enhances breathability while delivering a soft, sumptuous feel\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eOptiForm™ Firm Foam x2\u003c\/span\u003e: Double layer gently cushions and adapts to your body for balanced support without compromising resilience\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eAirstream Fibre\u003c\/span\u003e: Promotes airflow through the mattress for a fresher sleep environment\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eEternity™ Fibre\u003c\/span\u003e: Adds lasting comfort and helps the mattress retain its feel over time\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eBio Based ProShield®\u003c\/span\u003e: Protective layer using bio-based materials for added peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eSustainably Designed\u003c\/span\u003e\u003cbr\u003eFrom TCPP-free foams to a construction that reduces adhesives and improves recyclability, every layer has been thoughtfully considered — delivering sustainable progress without compromising comfort or durability. It’s exactly what you’d expect from the world’s No.1 sleep brand.\u003c\/p\u003e\n\u003ch3 class=\"mt-6 mb-2 font-semibold text-xl\" data-streamdown=\"heading-3\"\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eFull Specification\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"list-inside list-disc whitespace-normal [\u0026amp;\u0026gt;li]:ps-6\" data-streamdown=\"unordered-list\"\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eFirmness\u003c\/span\u003e: Extra Firm\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eSupport Core\u003c\/span\u003e: PostureTech 2.0™ Smart Spring System\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eEdge Support\u003c\/span\u003e: Dual Edge™ Technology\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eComfort Layers\u003c\/span\u003e: 1000 Micro Pockets, MicroCell™ Foam, OptiForm™ Firm Foam x2, Airstream Fibre, Eternity™ Fibre, Bio Based ProShield®\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"mt-6 mb-2 font-semibold text-xl\" data-streamdown=\"heading-3\"\u003e\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eSt James Bed Centre Service\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"list-inside list-disc whitespace-normal [\u0026amp;\u0026gt;li]:ps-6\" data-streamdown=\"unordered-list\"\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eFree Local Delivery\u003c\/span\u003e to Swaffham, Fakenham, Hunstanton, Sutton Bridge, Downham Market\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eFree Old Bed Disposal\u003c\/span\u003e when we deliver your new Sealy\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eTry Before You Buy\u003c\/span\u003e: Visit our showroom to test the Burnham in person\u003c\/li\u003e\n\u003cli class=\"py-1 [\u0026amp;\u0026gt;p]:inline\" data-streamdown=\"list-item\"\u003e\n\u003cspan class=\"font-semibold\" data-streamdown=\"strong\"\u003eSleep Experts\u003c\/span\u003e: Independent bed specialists with honest advice\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable width=\"100%\" style=\"width: 100.087%; height: 117.6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 25.0438%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 25.2189%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003eSingle\u003c\/td\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e90cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.0438%; text-align: center; height: 19.6px;\"\u003e190cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.2189%; text-align: center; height: 19.6px;\"\u003e28cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003eSmall Double\u003c\/td\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e120cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.0438%; text-align: center; height: 19.6px;\"\u003e190cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.2189%; text-align: center; height: 19.6px;\"\u003e28cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003eDouble\u003c\/td\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e135cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.0438%; text-align: center; height: 19.6px;\"\u003e190cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.2189%; text-align: center; height: 19.6px;\"\u003e28cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003eKing Size\u003c\/td\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e150cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.0438%; text-align: center; height: 19.6px;\"\u003e200cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.2189%; text-align: center; height: 19.6px;\"\u003e28cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003eSuper King\u003c\/td\u003e\n\u003ctd style=\"width: 24.3433%; text-align: center; height: 19.6px;\"\u003e180cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.0438%; text-align: center; height: 19.6px;\"\u003e200cm\u003c\/td\u003e\n\u003ctd style=\"width: 25.2189%; text-align: center; height: 19.6px;\"\u003e28cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Sealy","offers":[{"title":"Single","offer_id":58512240607557,"sku":null,"price":499.0,"currency_code":"GBP","in_stock":true},{"title":"Small Double","offer_id":58512240640325,"sku":null,"price":699.0,"currency_code":"GBP","in_stock":true},{"title":"Double","offer_id":58512240673093,"sku":null,"price":699.0,"currency_code":"GBP","in_stock":true},{"title":"King Size","offer_id":58512240705861,"sku":null,"price":799.0,"currency_code":"GBP","in_stock":true},{"title":"Super King","offer_id":58512240738629,"sku":null,"price":899.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/6321\/8757\/files\/Sealy_Burnham_Extra_Firm_mattress_with_PostureTech_2.0_1200_micro_pockets_and_DualEdge_support_at_St_James_Bed_Centre_free_delivery_to_Swaffham_Fakenham_Hunstanton.png?v=1783587970","url":"https:\/\/www.stjamesbedcentre.co.uk\/products\/sealy-burnham-extra-firm-mattress-posturetech%e2%84%a2-2-0-dualedge%e2%84%a2-st-james-bed-centre","provider":"St James Bed Centre","version":"1.0","type":"link"}