{"product_id":"foamrush-4-inch-48in-x-80in-high-density-foam-rv-mattress-replacement","title":"FoamRush 4-Inch 48in x 80in High Density Foam RV Mattress Replacement","description":"\u003cp\u003eIn this review the FoamRush 4-Inch High Density Foam RV Mattress Replacement is judged on comfort, fit for small sleeping platforms, and durability for travel use. The bottom line: this medium firm, CertiPUR-US certified foam is best for campers, trailers and RV bunks that need a simple, customizable replacement mattress that balances support and cushioning. The single biggest reason to buy is its high density construction and 44 ILD compression rating, which provides predictable firmness and long life for high use applications.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh density construction:\u003c\/strong\u003e The firm foam is formulated to provide long lasting support and durability for heavy traffic and high use seating and sleeping areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44 ILD compression:\u003c\/strong\u003e The specified compression value gives a consistent medium firm feel that resists sinking while still offering pressure relief.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertiPUR-US certified:\u003c\/strong\u003e The foam is certified for safety and quality so it is a better-regulated option than non-certified foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade to be customized:\u003c\/strong\u003e The foam is easy to cut, trim, stack or glue so you can adapt it to RV bunks, platform beds, futons or custom cushions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple applications:\u003c\/strong\u003e It works as a camper mattress, sleeper sofa topper or cushion replacement, fitting tight spaces like bunks and truck cabs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis foam is best for RV owners, vanlifers and boat owners who need a straightforward replacement mattress that fits narrow or nonstandard platforms and can be trimmed to size. It suits anyone who prefers a medium firm surface that offers support without excessive sink and who values a CertiPUR-US certified product for indoor projects.\u003c\/p\u003e\n\u003cp\u003ePeople who want a plush, pillow-top feel or an all-in-one covered mattress should look elsewhere, since this product ships as bare foam without a cover and has a firmer ILD that some will find too stiff for side-sleeping comfort.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid support from high density foam that holds up well in heavy use settings like RV bunks.\u003c\/li\u003e\n\u003cli\u003eCertiPUR-US certification offers reassurance about material quality and safety.\u003c\/li\u003e\n\u003cli\u003eEasy to cut, stack or glue for custom projects and nonstandard bed sizes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShips without a cover, so buyers must provide or sew a protective cover separately.\u003c\/li\u003e\n\u003cli\u003eFirmness is mixed in user feedback; some find the foam quite hard rather than medium firm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e48 in x 80 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmness (ILD)\u003c\/td\u003e\n\u003ctd\u003e44 compression rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003eHigh density foam (firm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eCertiPUR-US certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended use\u003c\/td\u003e\n\u003ctd\u003eRV, camper, truck, sleeper sofa, platform bed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe FoamRush 4-Inch High Density foam is a practical, value-minded replacement for RV bunks and tight sleeping platforms where support and durability matter. Its firm 44 ILD compression and CertiPUR-US certification make it a sensible choice for DIY customization and long term use, but buyers should plan to add a cover and expect a firmer feel than plush alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this mattress come with a cover?\u003c\/strong\u003e\u003cbr\u003eNo, the product ships as bare foam without a cover, so a separate protective cover is needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the foam be cut to fit odd sizes?\u003c\/strong\u003e\u003cbr\u003eYes, the foam is easy to trim, slice or stack with common tools and can be glued for wider or thicker configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow firm is this foam?\u003c\/strong\u003e\u003cbr\u003eThe foam has a 44 ILD compression rating, giving a medium firm to firm feel that resists deep sinking and is aimed at heavier use situations.\u003c\/p\u003e","brand":"FoamRush","offers":[{"title":"Default Title","offer_id":48638850433243,"sku":"B09NS21MZB","price":149.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41Bxmbq7NVL._AC_SL1080_2b5b193d-4c8f-4cbf-b405-aedfb4f28665.jpg?v=1778542469","url":"https:\/\/gearmusthave.com\/products\/foamrush-4-inch-48in-x-80in-high-density-foam-rv-mattress-replacement","provider":"GearMustHave","version":"1.0","type":"link"}