Cool Plus 12" Memory Foam Cooling Mattress

$585.00

Sale Sold out

The RZ Cool Plus 12" Mattress is a premium memory foam mattress built for sleepers who run warm, move around at night, or share a bed. With Graphice™ Memory Foam technology, an advanced cooling cover, and 12 inches of layered foam construction, it regulates your body temperature while conforming precisely to your shape — delivering pressure relief and spinal alignment through the night.

Every layer is 100% fiberglass-free. No hidden fire sock. No fiberglass particles migrating into your bedroom air or fabric. Just clean, certified foam built to CertiPUR-US standards.

Key Specifications

Feature	Detail
Height	12 inches
Construction	All-foam memory foam
Cooling Technology	Graphice™ Memory Foam + cooling cover
Fiberglass	None — 100% fiberglass-free
Certifications	CertiPUR-US certified
Motion Isolation	Superior — ideal for couples
Hypoallergenic	Yes
Split Head Option	Available for adjustable base compatibility
Sleep Trial	60 nights
Warranty	10-year manufacturer warranty
Shipping	Free via UPS to all lower 48 states (excluding California)
Delivery	7–10 business days

Why This Mattress Works

For hot sleepers: The cooling cover and Graphice™ Memory Foam work together to draw heat away from your body. Traditional memory foam traps heat — this mattress is engineered to move it. Open-cell foam construction increases airflow, so you're not sleeping in a heat pocket by 2 a.m.

For pressure relief:12 inches of foam allows for real contouring. The mattress distributes your body weight across a larger surface area, reducing point pressure at the hips, shoulders, and lower back. This matters most for side sleepers, who need give at the shoulders without losing lumbar support.

For couples: Superior motion isolation means your partner's movement stays on their side. Memory foam absorbs motion rather than transferring it — so restless sleepers don't become a shared problem.

For allergy and respiratory health: The hypoallergenic construction reduces the accumulation of dust mites, allergens, and off-gassing compounds common in lower-quality foams. CertiPUR-US certification confirms the foam has been tested for harmful chemicals, VOCs, heavy metals, and formaldehyde.

The Fiberglass-Free Difference

Most budget mattresses use fiberglass as a fire barrier inside the cover. When the cover is removed — or wears over time — fiberglass particles can spread throughout your bedroom. They are difficult to clean, can irritate skin and lungs, and have contaminated entire homes.

The RZ Cool Plus uses no fiberglass in any layer or fire barrier. It meets fire safety standards through alternative, safer materials. This is a non-negotiable standard at Guestly Sleep — every mattress we carry is fully fiberglass-free.

Who This Mattress Is For

Hot sleepers who have tried other memory foam mattresses and woken up overheated
Side sleepers who need pressure relief at the shoulder and hip without sacrificing support
Couples who need motion isolation so one person's movement doesn't wake the other
Allergy sufferers who need clean materials and certified foam
Adjustable base users who need a mattress with a split head option

Frequently Asked Questions

Is the RZ Cool Plus mattress fiberglass-free? Yes. There is no fiberglass in any part of this mattress — not in the foam, the cover, or the fire barrier layer.

Is this mattress CertiPUR-US certified? Yes. CertiPUR-US certification means the foam has been independently tested for durability, performance, and the absence of harmful chemicals including formaldehyde, heavy metals, and ozone-depleting compounds.

Does this mattress sleep cool? The RZ Cool Plus uses Graphice™ Memory Foam and a cooling cover specifically to address heat retention — a known drawback of traditional memory foam. The open-cell foam structure also improves airflow compared to standard foam.

What sleep positions does it support? The RZ Cool Plus works best for side sleepers and back sleepers. The foam contours to curves at the shoulders and hips while maintaining lumbar support. Stomach sleepers who prefer a firmer surface may want to consider a hybrid option.

Does it work with an adjustable base? Yes. This mattress is compatible with adjustable base systems.

What is the sleep trial?60 nights from delivery. If the mattress isn't right for your sleep, you can return it within that window. A $95 disposal fee applies.

Where is this mattress assembled? The RZ Cool Plus is assembled in the United States.

How long does delivery take?7–10 business days via UPS to all lower 48 states. California is currently excluded from shipping.

The Guestly Sleep Approach to Mattresses

We believe a mattress is a wellness product — not a decade-long commitment. The traditional mattress industry pushes 8–10 year replacement cycles because it serves their margins, not your health. Mattresses accumulate body oils, dead skin cells, dust mites, and allergens over time regardless of how well you care for them.

At Guestly Sleep, our pricing is designed to support 2–4 year replacement cycles. The RZ Cool Plus is priced to be genuinely replaceable — so you're always sleeping on a clean, supportive surface, not holding on to an aging mattress because you paid too much to let it go.