A King size polyurethane foam mattress (76” x 80”) offers maximum sleeping space for couples, families, or those who enjoy extra room to stretch out. Ideal for:
Available in soft to extra-firm comfort levels, tailored to your weight range. Choose between:
This spacious mattress provides excellent motion isolation, maintaining its supportive structure over time. With a customizable firmness option, it adapts to your sleep needs while offering the flexibility to add split firmness for personalized comfort.
Dimensions: 76” x 80”
Foam Type Options:
Firmness Levels: Soft, Medium, Firm, Extra Firm (varies based on weight range)
Mattress Thickness Options: Customizable, 2–12 inches
Motion Isolation: Minimal motion transfer for undisturbed sleep
Breathability: Open-cell foam design for airflow and temperature regulation
Certifications: CertiPUR-US® certified for low VOC emissions, made without formaldehyde, ozone depleters, or harmful flame retardants
Important Notice: Flammability Compliance
If you select a mattress cover option other than the Terry Velour cover, the product will not meet federal flammability standards required for items sold as “mattresses.” In this case, your order will be classified and shipped as a “Custom Sleep Product” rather than a “Mattress.”
At FoamOrder, we intentionally offer options with fewer chemical additives to support our commitment to natural and organic materials. Some of these options do not include the flame-retardant chemicals necessary to comply with federal flammability standards (16 CFR Parts 1632 and 1633).
By purchasing without the Terry Velour cover, you acknowledge and agree that:
- The item is being sold to you as a “Custom Sleep Product,” not as a “Mattress.”
- With the selected cover, the product does not comply with federal flame-retardancy requirements.
- You accept full responsibility for the use of this product.
Cover Options:
Terry Velour Zippered Cover (Default): Premium option that meets federal flame retardancy standards.
Cotton-Poly Blend Zippered Cover (40% Cotton / 60% Polyester): Mid-range option at a reduced price.
Cotton Muslin Zippered Cover: Lightweight, economical choice for basic fabric protection.
No Cover: Lowest cost option, just the foam core with no protective fabric.
Yes! A King size mattress (76” x 80”) gives each sleeper 38 inches of space—the same width as a Twin bed. This provides plenty of personal room, making it a top choice for couples who want maximum comfort without feeling crowded.
Yes. Our polyurethane foam mattresses are made with an open-cell foam design that promotes airflow and helps regulate temperature. This structure allows heat and moisture to dissipate more easily compared to closed-cell foams, most memory foams, and most traditional spring mattresses.
For those who tend to sleep warm, we recommend pairing your mattress with a breathable cover, such as cotton or Terry Velour, and using lightweight bedding. These choices work with the foam’s natural airflow to create a cooler, more comfortable night’s sleep.
King polyurethane foam mattresses are compatible with several types of bed frames, including:
For slatted frames, ensure slats are no more than 3 inches apart to prevent sagging and maintain proper long-term support.
Everflex Foam Mattress Warranty
Econoflex Foam Mattress Warranty
Shipping: Custom-cut polyurethane foam mattresses usually ship within 3–14 days, depending on foam type and production schedule. Because we rotate through multiple foam types weekly, lead times may vary slightly. If your order extends beyond this window, please contact us at FoamOrder Customer Support for an update.
Returns: Returns are accepted within 90 days of purchase, minus initial delivery or shipping costs.







