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Custom Foam Mattress – 2″–12″ Thick, 300 lb Support

$79.99 on Amazon.com (as of October 13, 2026, 12:12 PM EST) View details ↗

Upgrade your sleep setup with **Coaseb’s custom high-density foam mattress**, designed for precision comfort and durability. Choose from **2″ to 12″ thickness**, **18″ to 80″ width**, and **up to 84″ length** to fit daybeds, RV beds, bunk frames, or furniture padding projects. The **medium-firm or firm feel** ensures targeted support, while an optional **gel memory foam add-on** enhances pressure relief for a tailored sleep experience.

The **machine-washable polyester cover** protects against spills and wear, making maintenance effortless. Built to last, this foam supports **up to 300 lbs**, ideal for heavy use in custom mattresses, RV applications, or furniture padding. Whether you’re replacing worn-out foam or crafting a bespoke sleeping solution, Coaseb’s high-density construction delivers **long-lasting comfort and structural integrity**—all made in the USA.

Load CapacityUp to 300 lbs
Thickness Options2″ to 12″
Width Options18″ to 80″
Length OptionsUp to 84″
Cover MaterialMachine-washable polyester
Firmness OptionsMedium Firm or Firm (with optional gel memory foam add-on)
Can this mattress be used in an RV bed frame?
Yes, the customizable dimensions (up to 84″ long) and 300 lb weight support make it ideal for RV bed frames or furniture padding.
Is the gel memory foam add-on included or sold separately?
The gel memory foam add-on is an optional upgrade available separately.
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