King Size Mattress 12 in Cooling Gel Memory Foam - Medium Firm

In this review of the King Size Mattress 12 in Cooling Gel Memory Foam, the bottom line is simple: it is best for sleepers who want a medium firm, pressure-relieving mattress with cooling properties and a washable cover. The mattress stands out for combining a three-layer memory foam construction with a dedicated cooling gel layer and a removable cover, all made to CertiPUR-US standards in the USA. For couples, side and back sleepers, or anyone seeking relief from pressure points without a deep sink, this mattress offers balanced support and a noticeably cooler surface than standard foam.

Key Features

• Pressure-relieve comfort: The three-layer memory foam system works together to absorb and evenly distribute body pressure, reducing reaction force and helping muscles relax.
• Cooling gel layer: A special Cooling Gel Memory Foam layer uses heat-dissipating technology to help maintain a cooler sleeping surface through the night.
• Stable support: High-density base foam and breathable comfort foam provide consistent support across the mattress and resist feel changes between 4C and 30C.
• Removable washable cover: The zip-off fireproof cloth cover is easy to remove and machine wash, making surface care simple and practical.
• Medium firm feel: The mattress conforms to the body without excessive sink, making it a versatile choice for back, side and stomach sleepers seeking balanced support.
• CertiPUR-US and made in USA: Constructed without harmful substances and manufactured domestically for those prioritizing safety and material standards.

Who It's For

The King Size Mattress 12 in Cooling Gel Memory Foam is a strong match for couples and individual sleepers who want a mattress that balances pressure relief and support. It is especially well suited for people who wake hot or who need a mattress that reduces pressure on shoulders and hips while maintaining spinal alignment. The medium firm profile makes it a good default choice for mixed-position sleepers.

It is less ideal for those who prefer a very plush, pillow-top feel or an ultra-firm surface. Also, sleepers who require an innerspring bounce or adjustable base compatibility beyond standard frames should verify fit, since this is an all-foam mattress compressed and shipped in a box.

Pros & Cons

Pros

• Comfortable medium firm feel that provides pressure relief while maintaining support.
• Cooling gel layer and breathable knit top reduce heat retention compared with older memory foam designs.
• Removable, washable cover for easier cleaning and upkeep.
• CertiPUR-US certified and made in the USA for safer materials and local manufacturing.

Cons

• All-foam construction means less bounce than innerspring mattresses, which some sleepers may miss.
• Initial expansion can take 24-72 hours to reach full loft and feel, so full comfort may not be immediate.

Specifications

Size	King 80 ft x 76 in
Height	12 in
Construction	Three-layer memory foam with cooling gel layer
Firmness	Medium firm
Cover	Removable, washable knitted fabric with fireproof cloth
Certifications	CertiPUR-US
Origin	Made in the USA

Our Verdict

The King Size Mattress 12 in Cooling Gel Memory Foam is a sensible buy for most shoppers seeking a medium firm, pressure-relieving mattress with cooling performance and simple maintenance. It delivers good value through balanced support, a washable cover and CertiPUR-US materials, making it particularly appealing for couples and those who wake hot or want back pain relief without a heavy investment.

Frequently Asked Questions

How long until the mattress is ready to sleep on?
The mattress expands after unboxing and typically needs 24-72 hours to fully regain its shape and airflow; light use is fine earlier but full recovery can take up to three days.

Can the cover be washed?
Yes, the cover is removable and washable; unzip the cover and launder according to the care instructions to keep the surface clean.

Is this mattress safe for sensitive sleepers?
Yes, it meets CertiPUR-US standards and contains no fiberglass or harmful substances, making it suitable for most sensitive sleepers including pregnant users.