Craftsmanship & Materials
How It’s Made
Six layers of premium materials, 4,000+ hand-tempered coils, HyperCool™ technology, and 12 days of artisan craftsmanship — inside every Alaskan King mattress.
Our Construction Philosophy
Transparency Is Our Standard
Most mattress brands guard their construction as a trade secret. We believe the opposite: if your materials and methods are genuinely premium, you should be proud to describe them in detail. This page is that description.
The Alaskan King is not a bed-in-a-box. It cannot be compressed, rolled, and shipped in a tube. It is a fully assembled, hand-crafted sleep system that must be built to its full 108″ × 108″ dimensions from the very first stitch. That commitment to uncompressed, uncompromised construction is the foundation of everything we do.
Below, we detail every layer inside our mattresses — what it is, where it comes from, why we chose it, and what it does for your sleep. We also explain our proprietary HyperCool™ technology and walk through our six-step quality control process. Nothing is hidden. Everything is explained.
Inside Every Alaskan King
Layer-by-Layer Construction
From the top quilted cover to the organic cotton base, every layer has a purpose — and every material was chosen for performance, purity, and longevity.
Quilted Organic Cotton Cover
GOTS-Certified Organic Cotton
The outermost layer of every Alaskan King is a hand-quilted cover made from GOTS-certified organic cotton. Unlike synthetic covers treated with chemical finishing agents, our cotton ticking is grown without pesticides or herbicides and woven to a 300-thread-count density that is simultaneously soft to the touch and highly durable. The quilted pattern isn't decorative — it locks the fill layer firmly in place, preventing shifting or bunching over years of use.
Baby Cashmere Comfort Layer
Grade-A Baby Cashmere (Royale & Grand Royale)
In our Royale and Grand Royale collections, the cotton quilting encases a layer of Grade-A baby cashmere sourced from responsibly managed farms. Baby cashmere — harvested from the underbelly of young Hircus goats — is one of the softest natural fibers in the world. Its microscopic crimp structure creates millions of tiny air pockets that regulate temperature naturally, trapping warmth in winter and releasing heat in summer. This layer is what gives the Royale its signature cloud-like plushness.
Open-Cell Natural Latex
GOLS-Certified Dunlop Natural Latex
Beneath the comfort layers sits our signature GOLS-certified Dunlop natural latex — the structural heart of the Alaskan King's feel. Unlike synthetic polyurethane foam, natural latex is harvested from rubber trees in a process that is both renewable and carbon-negative. The open-cell matrix of our latex creates thousands of interconnected air channels throughout the material, allowing air to flow freely and preventing the heat buildup that plagues conventional memory foam mattresses. Dunlop latex also offers superior pressure relief: it compresses under your body weight and rebounds immediately, providing responsive support without the 'stuck' feeling of foam.
HyperCool™ Transition Layer
Phase-Change Material + Moisture-Wicking Fiber
The Alaskan King's 81 square feet of sleep surface generates more body heat than any standard mattress — and we engineered a proprietary solution. The HyperCool™ transition layer uses micro-encapsulated phase-change material (PCM) embedded in an open-weave moisture-wicking fiber matrix. PCM absorbs excess body heat when you're warm and releases it back when you cool down — actively maintaining your ideal sleep temperature throughout the night. Combined with the moisture-wicking fibers that draw perspiration away from the body, HyperCool™ ensures that every corner of your Alaskan King stays fresh, dry, and comfortable — even with multiple sleepers.
Individually Wrapped Pocketed Coils
Tempered Steel — 15.5 Gauge
The foundation of every Alaskan King is a hand-assembled pocketed coil system using individually hand-tempered 15.5-gauge steel springs. Each spring is independently wrapped in a breathable fabric pocket, allowing it to compress and rebound in complete isolation from its neighbors. This means that when one person moves, the person sleeping next to them feels nothing — a critical feature on a mattress shared by multiple sleepers. Our coil count per 108" × 108" surface exceeds 4,000 individual springs, providing zoned support across the shoulder, lumbar, and hip regions. The hand-tempering process — where each coil is individually hardened and shaped — adds 30–40% more compression resistance compared to machine-tempered coils.
Organic Cotton & Wool Base
Natural Wool Fire Barrier + Dense Cotton Foundation
The base layer serves two functions: it anchors the mattress structure and provides our natural, chemical-free fire barrier. Wrapped around the perimeter and base is a thick layer of naturally fire-resistant wool — a material that meets all US flammability standards without a single chemical treatment. No boric acid. No antimony. No polyester barriers soaked in fire retardants. Above the wool base sits a dense organic cotton foundation that distributes weight evenly, prevents coil protrusion, and adds decades of structural longevity to the mattress.
Proprietary Technology
HyperCool™ Technology: Solving the Large-Mattress Heat Problem
Every oversized mattress faces the same engineering challenge: a larger sleep surface traps more body heat, creating uncomfortable hot spots — especially at the center where air circulation is weakest. For a 108″ × 108″ mattress shared by multiple sleepers, this problem is magnified.
HyperCool™ is our proprietary answer. It is not a single material but a layered system — combining phase-change material (PCM), open-weave airflow engineering, and moisture-wicking fiber technology — that works together to maintain a consistent, comfortable sleep temperature across every square inch of the Alaskan King's surface, all night long.
Tested Result
<2°F surface temperature differential corner-to-corner, even with 4 sleepers
Phase-Change Material (PCM)
Micro-encapsulated PCM particles are embedded throughout the HyperCool™ layer. These particles absorb thermal energy as they change from solid to liquid state, acting as a heat sink during the first warm phase of sleep, then slowly releasing that energy back as the night cools — keeping your surface temperature in the ideal 65–68°F sleep zone.
Open-Weave Airflow Matrix
The carrier fabric of the HyperCool™ layer is woven with a deliberate open-weave pattern that allows unrestricted vertical and lateral air movement. This creates a continuous convective current through the mattress, preventing the stagnant warm air pockets that cause night sweats on traditional spring mattresses.
Moisture-Wicking Fiber Technology
Hygroscopic fibers woven into the HyperCool™ matrix actively draw moisture vapor away from the sleep surface into the breathable latex layer beneath, where it dissipates harmlessly. This keeps the surface dry even during high-perspiration periods, preventing the clamminess that can disrupt deep sleep.
Validated Across 81 Square Feet
Standard mattresses are engineered for one or two sleepers. Our HyperCool™ system was specifically calibrated for the thermal load of 2–5 sleepers sharing the Alaskan King's 81 sq ft surface. Internal testing across all three collections confirmed consistent surface temperature regulation, corner-to-corner.
Premium Materials
Only the Finest Natural Materials — By Design
We made an early and irrevocable decision: the Alaskan King would never contain synthetic polyurethane foam, chemical flame retardants, or unverified fill materials. Every material we use is independently certified, traceable to its source, and chosen because it performs better than its synthetic alternative.
Natural latex, for example, outlasts polyurethane foam by 10–15 years, resists dust mites and mold naturally, and provides superior pressure relief without the toxic off-gassing that occurs with new foam mattresses. Organic cotton breathes better than polyester. Cashmere wool regulates temperature more effectively than any synthetic fiber.
The result is a mattress that is healthier to sleep on, lasts longer, performs better, and leaves a smaller environmental footprint than any comparable product made with synthetic materials.
GOTS-Certified Organic Cotton
Grown without pesticides, woven to 300 TC density, hand-quilted on traditional frames.
GOLS-Certified Natural Latex
Dunlop-processed, open-cell structure, 20+ year lifespan, inherently antimicrobial.
Grade-A Baby Cashmere
Sourced from ethical Hircus goat farms, temperature-regulating, ultra-hypoallergenic.
Hand-Tempered Steel Coils
15.5-gauge, individually fabric-wrapped, 4,000+ per mattress, zero motion transfer.
HyperCool™ PCM Layer
Phase-change material + moisture-wicking matrix, validated to <2°F differential.
Natural Wool Fire Barrier
Meets all US flammability standards with zero chemical treatment — zero exceptions.
American Quality Control
Every Mattress Is Personally Certified Before It Leaves Our Workshop
Mass-produced mattresses move through automated assembly lines at a rate of hundreds per hour. Quality control, where it exists at all, is statistical — a sample of units checked against a standard, with the rest shipped on faith.
We operate differently. Because every Alaskan King is assembled by hand, every Alaskan King is also inspected by hand — at six distinct checkpoints, by named craftspeople, against documented specifications. The process takes an additional 4–6 hours per mattress. We consider that time non-negotiable.
When your Alaskan King arrives, it comes with a signed quality certificate from the craftsperson who built it and the inspector who cleared it. That is not marketing. That is accountability.
Material Intake Inspection
Every incoming material — organic cotton, natural latex, cashmere wool, coil springs — is batch-tested against our quality specifications before it enters our workshop. Materials that fail our standards are returned to suppliers, regardless of lead time or cost.
Layer Construction Verification
As each mattress is assembled layer by layer, our master craftspeople measure dimensions, spring count, and fill weight at three checkpoints. Any deviation beyond a 2% tolerance triggers a full reassembly of that section.
Compression & Rebound Testing
Every finished Alaskan King undergoes mechanical compression testing across 25 sample points on the sleep surface. We measure coil compression resistance, latex rebound time, and edge support performance — all documented against our factory standards.
Temperature & Breathability Audit
Our HyperCool™ layer is independently audited by placing each mattress in a thermal chamber for four hours and measuring surface temperature differentials. Mattresses that show hot spots are flagged and re-evaluated.
Seam, Stitch & Surface Inspection
A senior craftsperson performs a full visual and tactile inspection of every seam, corner, tufted button, and handle attachment. The quilted surface is checked for uniformity; the border fabric is examined for tension and alignment.
Certification & Dispatch
Once a mattress passes all five prior checkpoints, it receives a signed quality certificate from the lead inspector, is wrapped in recyclable protective fabric, and is dispatched via our specialized white-glove delivery network.
“A mattress built by machines to a price point will last as long as its price point suggests. A mattress built by craftspeople to a standard will last a generation.”
Alaskan King Bed Company — North Carolina, USA
Experience the Difference
Ready to Sleep on Six Layers of Pure Luxury?
Now that you know what goes inside, explore which Alaskan King collection matches your comfort preference — from the firm, supportive Original to the ultra-plush Grand Royale.