Quick Answer: The Healthy Beds Rx 3 uses variable-gauge tri-zone pocket coils (1.8mm at head/legs, 2.0mm at the body zone), a copper-infused foam layer, and a Coolmax cover. Medium comfort, Canadian-made, ships free Canada-wide in a box. Best for all sleep positions — the tri-zone engineering specifically addresses different body weight distributions. Queen at $1,250.
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Variable-Gauge Coils: The Actual Engineering
Most mattress marketing uses the term "tri-zone" or "zoned support" without explaining the mechanism. The Rx 3 is one of the few mattresses in our lineup where the engineering is specific enough to describe precisely.
The tri-zone system uses two different wire gauges in the coil system: 1.8mm gauge coils in the head and leg zones, and 2.0mm gauge coils in the central body zone. Wire gauge directly determines spring tension — thicker wire (higher gauge number means thicker in the non-metric system, but here 2.0mm is physically thicker than 1.8mm) requires more force to compress. The result is softer resistance under the head and legs, where weight is lighter, and firmer resistance under the torso, where the body's heaviest section rests.
Why Coil Gauge Engineering Matters for Spinal Alignment
The human body isn't uniformly weighted. In a supine position, the thoracic region and pelvis account for approximately 60-70% of total body mass, while the head accounts for roughly 8% and the legs the remainder. If every coil in a mattress has the same tension, the mattress must balance between supporting the heavy torso adequately and not being so firm that it creates pressure points under the lighter zones. Variable-gauge coils solve this by calibrating resistance to the expected load at each zone. Research on spinal alignment during sleep, published in the Journal of Orthopaedic Surgery and Research, found that zoned support systems produced more consistent lumbar alignment across different body weights and sleeping positions than uniform-tension mattresses. The spine maintains its natural curvature more reliably when the mattress responds proportionally to the load at each point along it.
The Rx 3 uses 1,166 individually wrapped pocket coils in the queen size — a coil count calibrated for the precision of zoned support rather than raw quantity. Each coil responds independently, and the variable gauge means the zones don't feel like abrupt boundaries — the transition from head zone to body zone is gradual because adjacent coils adjust to the pressure applied.
Copper-Infused Foam Layer
Above the coil system, the Rx 3 uses a copper-infused foam comfort layer. This is a different application of copper than in the Restonic Revive series (which uses copper-infused Talalay latex at the surface). Here, copper particles are distributed throughout the foam matrix itself.
Copper has two relevant properties for a foam layer. First, it's antimicrobial: the EPA registered copper as a surface sanitising agent in 2008, based on evidence that copper ions disrupt bacterial cell membranes on contact. In a foam matrix, this provides a natural antimicrobial environment that reduces the accumulation of bacteria in the comfort layer over time.
Second, copper is thermally conductive — roughly 400 times more conductive than standard polyurethane foam. Copper particles distributed through the foam create pathways for lateral heat conduction, moving warmth away from the body contact surface rather than allowing it to accumulate in the foam directly beneath you. This is distinct from the phase-change gel mechanism in cooling mattresses — copper conducts heat away; gel absorbs and stores it. In a medium-density foam layer, the copper conduction approach is effective for sustained temperature moderation rather than peak absorption.
The 3 inches of breathable open-cell foam above the coils adds air circulation to the thermal management system, and the 4-inch high-density foam perimeter provides edge support that prevents roll-off.
Coolmax Cover on the Rx 3
The Rx 3 uses a Coolmax stretchable fabric cover with a designer zipper system. Coolmax is the same polyester four-channel fibre technology we discussed in the Cool Breeze review — engineered for high moisture transport, drawing sweat away from the skin surface and releasing it into the air faster than standard cotton.
The zipper system on the Rx 3 deserves a mention. A removable, zippable cover on a mattress allows for proper cleaning — something that's difficult with permanently sewn covers. Over a 10-year mattress lifespan, the ability to remove and clean the cover properly (following care instructions) extends hygiene significantly.
Who the Rx 3 Suits
Best Fit for the Rx 3
- Back sleepers — the body zone firmness supports lumbar curvature while the head zone provides appropriate cushioning
- Side sleepers (average weight) — the softer head/shoulder zone accommodates shoulder sinking while body zone supports the spine
- Stomach sleepers — the firmer body zone resists pelvic sinking, the head zone accommodates neck position
- Couples with different body weights — tri-zone adapts to different weight distributions per sleeper
- Hot sleepers — copper conduction + Coolmax cover + open-cell foam provide meaningful temperature management
- Those ordering online — roll-packed with free Canada-wide shipping
The Rx 3 is one of the more versatile mattresses in our Sleep In lineup specifically because the tri-zone engineering reduces the precision of the firmness match required. On a uniform-tension mattress, a back sleeper with a heavier torso might need to choose between body zone support (firm) and head zone comfort (soft). The Rx 3 tries to address both simultaneously.
Our Honest Take
The Rx 3 is a thoughtfully constructed mattress. The variable-gauge tri-zone system is real engineering — not marketing language for a uniform coil system. The copper foam provides both antimicrobial protection and thermal conductivity that works differently from gel cooling. The Coolmax cover adds moisture management at the surface.
At $1,250 for a queen, it's positioned between the Spinal Rest ($575) and the Restonic Revive series (starting above $2,000). The materials and engineering justify the middle position. If you're looking for an advanced support system with cooling features at under $1,300 for a queen, the Rx 3 is a reasonable choice.
What the Rx 3 doesn't have: the luxury Euro top cushioning of the Sydney TT, the natural latex of the Elegant, or the organic certification of the Morning Glory. It's an engineering-forward mattress rather than a premium materials story. For customers who care more about support mechanics than material sourcing, that's an appropriate trade-off.
Pricing and Free Shipping
Current Pricing (CAD) — Free Canada-Wide Shipping Included
- Twin (580 coils): $1,110
- Double (792 coils): $1,210
- Queen (1,166 coils): $1,250
- King (1,512 coils): $1,450
Ships compressed in a box. Free Canada-wide courier delivery included. Call (519) 770-0001 to check in-store availability in Brantford.
Frequently Asked Questions
What does "tri-zone" mean in the Rx 3?
The Rx 3 uses variable coil wire gauges across three zones: 1.8mm gauge coils (lighter tension) under the head and legs, and 2.0mm gauge coils (firmer tension) under the body. This means the mattress provides softer resistance where the body is lighter and firmer support where it's heavier. It's an engineering approach to spinal alignment — the mattress responds proportionally to load rather than uniformly across the whole surface.
How does copper in foam differ from copper in latex?
The Rx 3 distributes copper particles through a foam matrix, providing antimicrobial properties and thermal conduction throughout the foam layer. In the Restonic Revive series, copper is infused into Talalay latex at the surface. The mechanism is the same (copper ions, antimicrobial; copper conductivity, heat transfer), but the base material differs — foam vs latex. Both are legitimate applications; the difference is in the overall feel and responsiveness of the surrounding material.
Can I try the Rx 3 at Mattress Miracle before ordering?
Yes — check with us at (519) 770-0001 whether it's currently on the showroom floor at 441 1/2 West Street, Brantford. We can also discuss the tri-zone engineering in person, which makes the design logic easier to understand when you're lying on it in different positions. Open Mon-Wed 10-6, Thu-Fri 10-7, Sat 10-5, Sun 12-4.
Does the Rx 3 work with an adjustable base?
Yes — the pocket coil construction is flexible enough for adjustable base articulation. The product description confirms adjustable base compatibility. Call (519) 770-0001 to confirm compatibility with your specific model before ordering.
How does free Canada-wide shipping work for the Rx 3?
The Rx 3 ships roll-packed in a box via courier. Shipping is included in the listed price. Once delivered, allow a few hours — ideally 24 hours — for the mattress to fully expand before sleeping on it. Contact us at (519) 770-0001 or visit us in Brantford if you'd prefer to purchase in-person and arrange local delivery.
Shop: All Mattresses at Mattress Miracle
Ask About the Rx 3 at Our Brantford Showroom
We are a family-owned mattress store in Brantford, helping our community sleep better since 1987. The Rx 3's variable-gauge tri-zone system makes more sense in person — come in and feel the difference between the zones when you lie on it.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001Related Reading
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