{"title":"Extra Firm Mattresses","description":"\u003cp\u003eFor the firmest, most supportive sleep surface, explore our extra firm mattresses at Rest Relax. An extra firm mattress keeps your spine properly aligned with minimal sink — ideal for back and front sleepers, heavier sleepers, and anyone who finds standard mattresses too soft. Choose from high-density reflex foam and orthopaedic spring builds across every UK size. Discover dependable, long-lasting support that helps you wake up free from aches and stiffness.\u003c\/p\u003e","products":[{"product_id":"anchor-support-foam-extra-firm-mattress","title":"Anchor Support Foam Extra Firm Mattress – 20cm Extra-Firm Orthopaedic Support","description":"\u003cp\u003eNeed the firmest possible support? The Anchor Support Foam Extra Firm Mattress is our hardest mattress, built from a 20cm reflex foam core — 40 density for an extra-firm feel — that delivers maximum orthopaedic support, exceptional resilience and proper spinal alignment. Silent and spring-free, with a soft removable quilted cover, it's made for adults who want a very firm, supportive surface, heavier sleepers and anyone who finds standard mattresses too soft. Hand-made in the UK and delivered rolled.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20cm reflex foam core (40 density, extra-firm feel)\u003c\/strong\u003e — maximum, stable orthopaedic support that keeps the spine aligned and won't sag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra-firm feel\u003c\/strong\u003e — our firmest mattress, ideal for those who find other beds too soft and for heavier sleepers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilent all-foam build\u003c\/strong\u003e — no springs, no noise for undisturbed sleep.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuilted zip-off cover\u003c\/strong\u003e — soft against the skin and removable to keep it fresh and hygienic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivered rolled and boxed\u003c\/strong\u003e — easy to move and set up; allow up to 72 hours to expand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEKO-TEX Standard 100 cover\u003c\/strong\u003e — fabric independently tested free from harmful substances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertiPUR-EU certified foam\u003c\/strong\u003e — made without formaldehyde, heavy metals or ozone depleters and low in VOCs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures at a Glance\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20cm reflex foam core (40 density), no springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Firmness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExtra Firm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuilted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCover\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuilted, zip-off\/removable, OEKO-TEX Standard 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFoam Certification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCertiPUR-EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOrthopaedic, extra-firm support, reflex foam, silent (no springs), hypoallergenic, removable cover, rolled, adult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNext Day Delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGuarantee\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Warranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Visco Therapy","offers":[{"title":"3ft Single (90 x 190 cm) \/ White","offer_id":57803221860739,"sku":"VANCHORSUPF30","price":189.0,"currency_code":"GBP","in_stock":true},{"title":"4ft Small Double (120 x 190 cm) \/ White","offer_id":57803221893507,"sku":"VANCHORSUPF40","price":249.0,"currency_code":"GBP","in_stock":true},{"title":"4ft6 Double (135 x 190 cm) \/ White","offer_id":57803221926275,"sku":"VANCHORSUPF46","price":249.0,"currency_code":"GBP","in_stock":true},{"title":"5ft King (150 x 200 cm) \/ White","offer_id":57803221959043,"sku":"VANCHORSUPF50","price":289.0,"currency_code":"GBP","in_stock":true},{"title":"6ft Super King (180 x 200cm) \/ White","offer_id":57803221991811,"sku":"VANCHORSUPF60","price":349.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0571\/9087\/5336\/files\/visco-therapyanchor-support-foam-extra-firm-mattressvanchorsupf30-1200025.jpg?v=1776450084"},{"product_id":"anchor-pro-support-foam-extra-firm-mattress","title":"Anchor Pro Support Foam Extra Firm Mattress – 25cm Flippable Extra-Firm Orthopaedic","description":"\u003cp\u003eWant the firmest support in a deep, double-sided build? The Anchor Pro Support Foam Extra Firm Mattress is our firmest orthopaedic option, built from a generous 25cm reflex foam core — 40 density for an extra-firm feel — with maximum spinal support and outstanding durability. Its flippable, double-sided design lets you rotate and turn it for even wear, and the ZigZag quilted cover unzips for easy cleaning. Silent and spring-free, it's made for adults who want a very firm, long-lasting, premium-depth bed. Hand-made in the UK and delivered rolled.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25cm reflex foam core (40 density, extra-firm feel)\u003c\/strong\u003e — maximum orthopaedic support that keeps the spine aligned and resists sagging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlippable, double-sided design\u003c\/strong\u003e — turn and rotate for even wear and longer life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra-firm feel\u003c\/strong\u003e — our firmest support, ideal for those who find other beds too soft and for heavier sleepers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilent all-foam build\u003c\/strong\u003e — no springs, no noise for undisturbed sleep.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZigZag quilted cover with middle zip\u003c\/strong\u003e — removable for easy cleaning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivered rolled and boxed\u003c\/strong\u003e — easy to move and set up; allow up to 72 hours to expand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEKO-TEX Standard 100 cover\u003c\/strong\u003e — fabric independently tested free from harmful substances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertiPUR-EU certified foam\u003c\/strong\u003e — made without formaldehyde, heavy metals or ozone depleters and low in VOCs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures at a Glance\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25cm reflex foam core (40 density), flippable double-sided, no springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Firmness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExtra Firm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMattress Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuilted (ZigZag)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCover\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZigZag quilted, middle-zip\/removable, OEKO-TEX Standard 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFoam Certification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCertiPUR-EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOrthopaedic, extra-firm support, flippable double-sided, reflex foam, silent (no springs), hypoallergenic, removable cover, rolled, adult\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNext Day Delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGuarantee\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Warranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Visco Therapy","offers":[{"title":"3ft Single (90 x 190 cm) \/ White","offer_id":57803222024579,"sku":"VANCHORPROSUPF30","price":219.0,"currency_code":"GBP","in_stock":true},{"title":"4ft Small Double (120 x 190 cm) \/ White","offer_id":57803222057347,"sku":"VANCHORPROSUPF40","price":299.0,"currency_code":"GBP","in_stock":true},{"title":"4ft6 Double (135 x 190 cm) \/ White","offer_id":57803222090115,"sku":"VANCHORPROSUPF46","price":299.0,"currency_code":"GBP","in_stock":true},{"title":"5ft King (150 x 200 cm) \/ White","offer_id":57803222122883,"sku":"VANCHORPROSUPF50","price":349.0,"currency_code":"GBP","in_stock":true},{"title":"6ft Super King (180 x 200cm) \/ White","offer_id":57803222155651,"sku":"VANCHORPROSUPF60","price":419.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0571\/9087\/5336\/files\/visco-therapyanchor-pro-support-foam-extra-firm-mattressvanchorprosupf30-4674069.jpg?v=1776450074"},{"product_id":"hardrock-super-firm-reflex-foam-mattress-firm-comfort-cleanable-cover-silent","title":"Hardrock Super Firm Reflex Foam Mattress – Firm Orthopaedic No-Spring Support","description":"\u003cp\u003eWant a genuinely firm bed without the heat of memory foam or the bounce of springs? The Hardrock Super Firm Reflex Foam Mattress is built around a high-density reflex foam core that gives stable, even, orthopaedic support and holds its shape night after night. With no springs inside it stays silent and motion-free — a dependable choice for firmer-feel and front sleepers, heavier sleepers who need extra support, and busy guest rooms, rentals and student rooms. 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