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White rectangular 4 inch thick memory foam mattress folded for sofa bed use 72 by 53 inches

4 Inch Full Size Gel Memory Foam Sofa Mattress MemoryFoam-U

SKU CH-W9FF-KD8V0

A 4-inch full-size gel memory foam mattress with a .5-inch cooling top layer and 3.5-inch supportive base, certified by OEKO-TEX and CertiPUR-US.

  • Bed sizeFull
  • ComfortMedium Firm
  • Main materialMemory Foam
  • Gel-infused top layer keeps sleep cool with .5 inch memory foam
  • High-resiliency 3.5 inch base prevents sagging for lasting support
  • OEKO-TEX and CertiPUR-US certified foams verified for safety and durability
  • Removable zippered cover machine washes easily with anti-slip bottom grip
  • Folds to fit sleeper sofas, RVs and boats at 72 x 53 x 4 inches

Full Size Gel Memory Foam Mattress

The 4-inch Full size mattress measures 72" L x 53" W x 4" Th and weighs 16.5 pounds. A .5-inch gel-infused memory foam comfort layer sits above a 3.5-inch high-resiliency foam base for medium-firm support. It is certified by OEKO-TEX and CertiPUR-US and includes a removable, machine-washable cover with an anti-slip bottom.

Upgrade from Thin or Worn Sofa Pads

This mattress replaces thin factory pads or sagging foam in sleeper sofas, pull-out beds, RVs and boats. The jump is worth it when the existing cushion is under 3 inches thick, has lost its shape or sleeps hot, because the gel-infused top layer and high-density base restore contouring support and airflow.

Buyers Needing a Folding Full Size Sleep Surface

It suits anyone who needs a certified foam mattress that folds into a standard Full size sofa frame for occasional or daily use. Shoppers who want a queen or king dimension, a thickness above 4 inches, or a coil-based feel should look at something else.

How it compares

Measured against everything we stock in Mattresses, Toppers & Bed Bases, at today’s prices. Recalculated every night.

Price $94.99
Pricier than about 59% of the 55 comparable items (median $84.99).

Specifications

Size & build
Bed sizeFull
Main materialMemory Foam
More details
ComfortMedium Firm

Questions about this item

What are the exact dimensions I need to clear inside my sleeper-sofa frame for this 72" L x 53" W x 4" Th mattress?

The mattress measures 72 inches long, 53 inches wide and 4 inches thick, so the frame cavity must accommodate at least those clearances.

How do I fit the mattress into the sofa mechanism, and what step do people often miss?

Fold the mattress along its 72-inch length, insert it into the frame, then unfold fully; the step many skip is zipping the removable cover back on so the anti-slip bottom grips the frame.

When and how should I clean or replace the cover to keep the foam in good condition?

Unzip the cover and machine-wash it on a gentle cycle whenever it soils; the foam core itself is not washable and does not require replacement under normal use.

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