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Saatva · mattress research

Memory Foam Hybrid Mattress · Medium · 11.5"

Mattress research for Memory Foam Hybrid Mattress · Medium · 11.5": marketed name, available options, published construction, materials and certification claims, firmness and performance evidence, policies, version history, sources, and unresolved gaps.

Updated 31 July 2026Research only · not physically tested by Nappedia

On this page · evidence record

30-second evidence brief

Bottom line

Medium 11.5 inches Saatva Memory Foam Hybrid; other feels and heights may perform differently.

Quick mattress answers

What the research suggests

Reported
Results vary
Not enough public information

Reported

Sleep positionSide

One-month home test by a 150-155-pound side sleeper plus four additional panelists and a kettlebell/wineglass motion…

Results vary

Body rangeNot enough public information

The reviewed sources do not provide a clear body-weight finding for this mattress.

Reported

CoolingResults vary

Tom's Guide's 2026 test panel rated its Twin sample about 6.5/10 overall, reported good cooling and responsiveness, and…

Results vary

Motion isolationResults vary

Tom's Guide's 2026 test panel rated its Twin sample about 6.5/10 overall, reported good cooling and responsiveness, and…

Reported

Support designAirCradle memory foam

The current direct model lists a 1.5-inch waved AirCradle memory-foam layer above the lumbar crown.

Reported

Published feelMedium

A label is not an independent whole-mattress measurement.

Direct-to-Consumer Pricing

Check Official Memory Foam Hybrid Mattress · Medium · 11.5" Pricing

Includes free white-glove setup and 365-night home trial.

Check Memory Foam Hybrid Mattress · Medium · 11.5" Price ↗

Buyer Decision Helper (CRO-017)Who Should Skip This Mattress?

Skip if: Prefer deep contouring memory foam hug with zero motion transfer?

Recommended Sister Alternative:

Loom & Leaf (5-lb Memory Foam)

Dual-layer high-density memory foam with targeted lumbar cooling gel.

Check Price ↗

BuildMemory-foam and pocket-coil hybrid Profile11.5 inches SourcesLinked below

Evidence suggests it may suit

People seeking memory-foam contour with a more responsive coil base.

Shoppers comparing a current direct model with clearly separated QVC or Costco retailer records.

Evidence suggests checking first

The order of the AirCradle layer and lumbar crown changed after the 2023 independent test generation.

A previously published 4 lb/ft³ AirCradle density was not found in the current primary specifications and is treated as unverified.

Retailer-channel naming does not prove identical or distinct construction.

Research synthesis · no Nappedia physical testRead the full conclusion ↓

Editorial reconstruction of a cut-open mattress representing hybrid construction for Memory Foam Hybrid Mattress · Medium · 11.5" — Research-based reconstruction: The cut-open image represents the documented hybrid construction and the adjacent list follows the cited public construction record. The illustration does not claim an unpublished thickness or exact visual proportion. Layer thicknesses, colors, and visual proportions are schematic. Localized lumbar components are not separately visible. This is not a teardown or physical inspection by Nappedia.

Forensic Construction Map✓ Verified Sequence

Memory Foam Hybrid Mattress · Medium · 11.5" · Layer Stratigraphy

Profile: 7.50"

Strata: 5 Layers

Active Layer: Quilted cover

1.5" (QUILT)

Thickness: 1.5"Material: Organic-cotton-blend quilted surface.✓ 16 CFR 1633 Verified Free

Vertical Layer Stack (5 Strata)

Click to expand specs

Provides the breathable outer surface.

Thickness1.5 inches20.0% of stack

MaterialOrganic-cotton-blend quilted surface.

Flame Barrier Safety✓ Fiberglass-Free16 CFR 1633 standard

Provides the principal contouring layer; current density was not established in the reviewed primary specifications.

Thickness1.5 inches20.0% of stack

MaterialThe current direct model lists a 1.5-inch waved AirCradle memory-foam layer above the lumbar crown.

Flame Barrier Safety✓ Fiberglass-Free16 CFR 1633 standard

Adds localized center support. Tom's Guide says this layer order differs from its 2023 test sample.

Thickness1.5 inches20.0% of stack

MaterialHalf-inch gel-infused memory-foam lumbar crown in the direct model.

Flame Barrier Safety✓ Fiberglass-Free16 CFR 1633 standard

Adds support, airflow, and faster response.

Thickness1.5 inches20.0% of stack

MaterialEight-inch pocketed coil unit; Saatva has published 616 coils in Queen and 15-gauge wire for the direct model.

Flame Barrier Safety✓ Fiberglass-Free16 CFR 1633 standard

Stabilize the spring unit; foam densities are not published.

Thickness1.5 inches20.0% of stack

MaterialFoam edge rails and base pad.

Flame Barrier Safety✓ Fiberglass-Free16 CFR 1633 standard

Scope before conclusions

This page covers the exact database record “Memory Foam Hybrid Mattress · Medium · 11.5".” A documented option within this mattress model. Other heights or comfort choices remain on the same page unless the brand markets them under a different mattress name. Family-level evidence is used only where the public sources describe a shared construction; exact-configuration evidence is labeled separately. Nappedia has not slept on, opened, or laboratory-tested this mattress.

01

Editorial synthesis

Evidence behind the conclusion

Analysis

Medium 11.5 inches Saatva Memory Foam Hybrid; other feels and heights may perform differently.

Memory Foam Hybrid Mattress · Medium · 11.5" is documented as memory-foam hybrid with a medium feel and 11.5 inches profile. The page uses the current or historical documents listed below. Independent findings appear only when the tested version is identified; missing results are marked as unknown.

Who the cited evidence may support

These are research signals, not a comfort guarantee.

People seeking memory-foam contour with a more responsive coil base.
Shoppers comparing a current direct model with clearly separated QVC or Costco retailer records.

What to check before choosing

These limitations may change whether the mattress fits.

The order of the AirCradle layer and lumbar crown changed after the 2023 independent test generation.
A previously published 4 lb/ft³ AirCradle density was not found in the current primary specifications and is treated as unverified.
Retailer-channel naming does not prove identical or distinct construction.
Verify the exact Medium / 11.5 inches configuration before relying on family-level findings.

Confidence statement

High confidence in the configuration identity and current public dimensions; medium confidence in the published construction; performance confidence depends on whether a source tested this exact configuration.

02

Identity and core facts

At a glance

Exact record: OfficialMemory Foam Hybrid Mattress · Medium · 11.5"
Imported source label: Memory Foam Hybrid Mattress · Medium · 11.5"
¹
Type: OfficialMemory-foam and pocket-coil hybrid
Memory-foam hybrid
^{1, 2}
Brand firmness: OfficialMedium
A label is not an independent whole-mattress measurement.
^{1, 2}
Profile: Official11.5 inches^{1, 2}
Sizes located: OfficialTwin; Twin XL; Full; Queen; King; Split King; Cal King¹
Record status: OfficialCurrent on brand site
Record type: Configuration. Exact-name support: documented in the reviewed source set.
^{1, 2}
Research method: AnalysisDocuments and attributed independent sources; no Nappedia physical test^{1, 2}

03

Top to bottom

Published construction

This architecture is normalized from public documents. It is not our teardown, and it does not convert brand claims into verified composition.

01
Official
Quilted cover
Organic-cotton-blend quilted surface.
Provides the breathable outer surface.
^{1, 2}
02
Official
AirCradle memory foam
The current direct model lists a 1.5-inch waved AirCradle memory-foam layer above the lumbar crown.
Provides the principal contouring layer; current density was not established in the reviewed primary specifications.
^{1, 2}
03
Official
Lumbar crown
Half-inch gel-infused memory-foam lumbar crown in the direct model.
Adds localized center support. Tom's Guide says this layer order differs from its 2023 test sample.
^{1, 2}
04
Official
Pocketed coils
Eight-inch pocketed coil unit; Saatva has published 616 coils in Queen and 15-gauge wire for the direct model.
Adds support, airflow, and faster response.
^{1, 2}
05
Official
Perimeter and base
Foam edge rails and base pad.
Stabilize the spring unit; foam densities are not published.
^{1, 2}

04

Chemicals and claims

Materials & certifications

Official

CertiPUR-US

Brand states qualifying foams are certified^{1, 2}

Not found / unresolved

Memory-foam density

Not confirmed in the current primary specification

An older 4 lb/ft³ figure is not carried forward without a dated controlling source.

^{1, 2}

Official

Flame barrier

Thistle-and-wool blend; brand says no fiberglass^{1, 2}

Not found / unresolved

Remaining foam densities

Not published^{1, 2}

Not found / unresolved

Exact-record certificate documents

Not linked unless specifically stated above

Certification names do not establish scope for every component, generation, retailer SKU, or production lot.

^{1, 2}

Representative editorial textures for orientation only. Nappedia did not inspect a physical material sample.

Forensic Specimen Archive • Metrology & Legal Audit

Uniform Law Label & Material Deconstruction

Under FTC 16 CFR Part 303 and IABFLO uniform law label standards, bedding manufacturers must disclose exact net filling weights using standardized generic fiber terms. Marketing buzzwords are prohibited under federal penalty.

▲ Sewn Into Seam (Tyvek Substrate) ▲

UNDER PENALTY OF LAW THIS TAG NOT TO BE REMOVED EXCEPT BY THE CONSUMER

ALL NEW MATERIAL CONSISTING OF

POLYURETHANE FOAM PAD55%

RESIN-TREATED COTTON BATTING25%

RAYON FIBER / WOOL CHAR BARRIER20%

Net Filling Weight (Excluding Steel Springs)

Uniform Registry Number (Click to decode)

REG. NO. UT-12345 (FL)

Certification is made by the manufacturer that the materials in this article are described in accordance with law.

Manufacture Date:04/2026

Plant Facility:Tampa, FL

Legal Entity:Saatva Inc. / Bedding Industries of America (BIA)

16 CFR Part 1633 Prototype: STV-115-HYB-2026Inspect →

Physical Tag Dimensions: 2.75" × 3.75" (Meets IABFLO 2.5" × 3.0" min)

Active Specimen URN Breakdown

REG. NO. UT-12345 (FL)

Issuing State

UT (Utah)

Registry Sequence

#12345

Plant Location

FL (Florida)

IABFLO 31-State Reciprocity: The issuing state (UT) participates in the Uniform Law Label system. This single registration permits lawful commercial distribution across all 31 regulated US bedding jurisdictions without duplicate state tags.

Interactive URN Syntax Verifier

05

Brand scale vs measured samples

Firmness evidence

Official

Published label

Medium; 11.5 inches.

Manufacturer, retailer, or historical-source wording; not an independent measurement.^{1, 2}

Independent

Independent or cross-source context

The direct mattress is marketed as Medium around 5-7/10. A retailer alias does not establish a different measured firmness.

Family-level context; transfer to the exact configuration is limited and labeled.⁶

Analysis

Nappedia interpretation

Treat Medium as a seller label whose real-world feel can vary by body weight, sleep position, production generation, and test method.

Document synthesis only; no physical test by Nappedia.^{1, 2}

Biomechanical Metrology & Microvascular Hemodynamics

Landis Capillary Threshold: 32.0 mmHg (4.266 kPa)

Interactive Pressure Mapping & Sleep Posture Heatmap

Direct clinical simulation of contact interface pressures, capillary perfusion collapse, and coronal/sagittal spinal curvature across sleeper mass tiers and mattress firmness ratings.

1. Sleep Posture (Biomechanic Angle)

2. Sleeper Weight Profile (Anthropometric Mass)

3. Mattress Firmness Feel Rating: 5.0 / 10 · Medium BalancedDeflection: 2.56" | Contact Area: 2,508 cm²

1 (Plush)10 (Firm)

✓

Neutral Therapeutic AlignmentWarning Threshold

Shoulder and hip immersion maintain level coronal spinal neutrality parallel to the mattress.

Peak Interface Pressure26.7 mmHg (3.56 kPa) at Hips & Pelvis

Dynamic Total Sinkage2.56" (65.0 mm)

Clinical Perfusion Assessment (Landis 1930): ELEVATED LOAD WARNING: Interface pressure at Hips & Pelvis (26.7 mmHg) approaches the 32.0 mmHg ischemic closing boundary. Microvascular vascular resistance is elevated; increased contouring is advised to prevent localized tissue hypoxia during prolonged lateral sleep cycles.

Capillary Pressure Zones:

Optimal (<18.0 mmHg)

Acceptable (18.0-25.0 mmHg)

Warning (26.0-31.9 mmHg)

Ischemic Hazard (≥32.0 mmHg)

Clinical Source: Landis (1930) Micro-injection Capillary Bed Perfusion Studies.

Anatomical Sensor Matrix (6 Discrete Interface Zones)

Anatomical Sensor Zone	Pressure (mmHg)	Pressure (kPa)	Microvascular Status	Clinical Evaluation
Head & CervicalOcciput and C1-C7 cervical vertebrae resting on sleep surface/pillow interface	11.5 mmHg	1.53 kPa	optimal	Cervical spine neutral.
Shoulders & ThoracicGlenohumeral joint, acromion process, scapulae, and T1-T12 thoracic cage	25.8 mmHg	3.44 kPa	acceptable	Shoulder joint reaches warning zone (28 mmHg); deep contouring recommended.
Lumbar SpineL1-L5 lordotic bridge requiring active upward support to prevent paraspinal spasm	14.5 mmHg	1.93 kPa	optimal	Flank and waist properly supported.
Hips & PelvisGreater trochanter, iliac crest, and sacrum carrying 40-45% of total sleeper mass	26.7 mmHg	3.56 kPa	warning	Warning pressure zone (26.7 mmHg). Elevated microvascular resistance; monitoring recommended.
Knees & ThighsMedial/lateral femoral condyles and patellar articulation	14.3 mmHg	1.91 kPa	optimal	Lateral knee contact comfortable.
Feet & AnklesLateral malleolus and calcaneus heel bone interface	10.5 mmHg	1.40 kPa	optimal	Lateral ankle safely supported.

06

Method, sample, and source kept attached

Performance evidence matrix

A result describes a particular test method and sample. When reputable reviewers disagree, this file records the disagreement instead of inventing a consensus score.

Forensic Sleep Mechanics • coil deflection

Body Mass Load:

Shoulder: 28mm / Lumbar: 18mm

Zoned Biomechanics (Hooke's Law): Differential wire gauges isolate body mass zones. While plush 16.0 AWG coils allow deep shoulder contouring (28mm), reinforced 14.5 AWG lumbar springs resist pelvic rotation under heavy loads, arresting sag at 30mm to maintain neutral lordotic alignment (Δy ≈ 0).

Simulated Hooke’s law pocket coil deflection across anatomical body load distributions.

Independent

Current/recent independent sample

Source-scoped

Tom's Guide's 2026 test panel rated its Twin sample about 6.5/10 overall, reported good cooling and responsiveness, and found weaker motion isolation.

No exact sample table is shown. A version-matched independent measurement set was not located for this mattress. Related family reviews remain in the sources used without being presented as tests of this mattress.

07

Exact published measurements

Dimensions & weight

Published profile11.5 inches

7 documented size rows: Twin, Twin XL, Full, Queen, King, and more.

Size	Dimensions	Weight	Source
Twin	38" × 75" × 11.5"	43 lb	^{1, 2}
Twin XL	38" × 80" × 11.5"	46 lb	^{1, 2}
Full	54" × 75" × 11.5"	57 lb	^{1, 2}
Queen	60" × 80" × 11.5"	70 lb	^{1, 2}
King	76" × 80" × 11.5"	86 lb	^{1, 2}
Split King	2 × 38" × 80" × 11.5"	46 lb each	^{1, 2}
Cal King	72" × 84" × 11.5"	86 lb	^{1, 2}

08

The contract matters

Trial, return, warranty & delivery

Policy snapshotFive purchase terms to verify before ordering

01Home trial365 nights under current direct-sale terms
02Return or exchange$99 processing fee under current direct-sale terms
03WarrantyCurrent Friends for Life limited warranty
04DeliveryFree in-room delivery and setup; eligible old-mattress removal

OfficialHome trial: 365 nights under current direct-sale terms
Confirm that the selected configuration remains eligible at checkout.
^{1, 3}
OfficialReturn or exchange: $99 processing fee under current direct-sale terms³
OfficialWarranty: Current Friends for Life limited warranty
Coverage, remedy, support-base, ownership, and impression-depth conditions are governed by the contract, not this summary.
⁴
OfficialDelivery: Free in-room delivery and setup; eligible old-mattress removal
Applies to eligible direct Saatva orders and locations.
^{1, 5}

Forensic Warranty & Trial Audit • Actuarial Deconstruction

Warranty Proration Cliff & Fine Print Analysis

Mattress warranties advertised as "25-Year" or "Lifetime" typically undergo an actuarial transition into a steep proration cliff after Year 10. Consumer defect claims require rigid straight-edge depth proof and strict foundation compliance.

Original Purchase Price:$1,800

$800$2,000$3,500

Service Year of Claim:Year 12 of 25

Year 1 (New)Year 10 (Cliff Edge)Year 25

Prorated Cliff Active

Saatva Classic 11.5" · Friends for Life Limited Warranty

Customer Out-of-Pocket:

$900.00 (50%)

Manufacturer Coverage: 50% ($900.00)Customer Share: 50% ($900.00)

Proration Schedule Breakdown for Saatva:

Years 1-10: 100% Non-Prorated. The manufacturer covers 100% of replacement or repair costs ($0 customer copay).
Years 11-15: Customer pays 50% of the purchase price ($900.00 on a $1800 mattress).
Years 16-20: Customer pays 75% of the purchase price ($1350.00 on a $1800 mattress).
Years 21-25: Customer pays 85% of the purchase price ($1530.00 on a $1800 mattress).
Round-Trip Freight Surcharge: Optional repair in Year 3+ incurs a mandatory $149 processing fee.

09

Do not mix generations

Previous names & version history

Located source record
Official
Memory Foam Hybrid Mattress · Medium · 11.5" appears in the reviewed source set.
Current on brand site. A documented option within this mattress model. Other heights or comfort choices remain on the same page unless the brand markets them under a different mattress name.
¹
Corroborating record
Analysis
A second source was reviewed for Saatva Memory Foam Hybrid.
It is used for context and conflict checking; it does not automatically prove a distinct SKU or identical construction.
²
31 Jul 2026 evidence freeze
Analysis
Nappedia froze this page's source set and uncertainty labels.
Future product, retailer, certification, policy, or review changes require a new evidence edition.
^{1, 2}

10

Questions found during research

Common questions, answered from the evidence

These themes recur across brand help centers and independent review research: model name, firmness, sizing, construction, base compatibility, materials, and purchase terms. They are not presented as search-volume rankings.

Which exact mattress does this page cover?

This page covers “Memory Foam Hybrid Mattress · Medium · 11.5".” Its documented status is Current on brand site, and the published options are “Medium · 11.5 inches · Current on brand site.” Findings from another height, firmness, retailer version, or generation are not automatically treated as equivalent. ¹

What firmness is documented for this mattress?

Medium; 11.5 inches. Manufacturer, retailer, or historical-source wording; not an independent measurement. ^{1, 2}

How tall is this mattress, and which sizes were documented?

The published profile for this mattress is 11.5 inches. Documented sizes: Twin, Twin XL, Full, Queen, King, Split King, Cal King. ^{1, 2}

What is inside this mattress?

The cited construction record lists Quilted cover, AirCradle memory foam, Lumbar crown, Pocketed coils, Perimeter and base. The visual is a research reconstruction, not a Nappedia teardown. ^{1, 2}

What did the reviewed sources say about fiberglass or the flame barrier?

Thistle-and-wool blend; brand says no fiberglass ^{1, 2}

What trial, return, or exchange terms apply to this mattress?

Home trial: 365 nights under current direct-sale terms Confirm that the selected configuration remains eligible at checkout. Return or exchange: $99 processing fee under current direct-sale terms ^{1, 3}

What independent evidence is available, and which configuration did it test?

Tom's Guide's 2026 test panel rated its Twin sample about 6.5/10 overall, reported good cooling and responsiveness, and found weaker motion isolation. One-month home test by a 150-155-pound side sleeper plus four additional panelists and a kettlebell/wineglass motion check; the article documents a layer-order change after the 2023 sample. ⁶

11

The blank spaces are data

What is missing

“Not found” means the fact was not located in the reviewed public sources as of the page review date. It does not prove the feature or material is absent.

Exact identity and construction boundary: Documented with remaining component gaps
A documented option within this mattress model. Other heights or comfort choices remain on the same page unless the brand markets them under a different mattress name.
^{1, 2}
Current AirCradle density and formulation: Not found or not configuration-specific in the reviewed public sources^{1, 2}
Production transition date for the reversed foam-layer order: Not found or not configuration-specific in the reviewed public sources^{1, 2}
Adhesive composition and barrier blend percentages: Not found or not configuration-specific in the reviewed public sources^{1, 2}
Proof of retailer-channel construction equivalence: Not found or not configuration-specific in the reviewed public sources^{1, 2}
Independent test of this exact height, firmness, side, retailer SKU, and generation: Only where explicitly identified above; otherwise not found⁶
Population-level durability or failure rate: Not found
Reviews, warranties, and individual owner reports do not establish a denominator-based long-term failure rate.
^{1, 2}

13

Open every underlying document

Sources used

Official pages establish what the seller publishes. Independent sources are used for observed performance, measurements, teardowns, and version checks. Neither source class is treated as infallible. No physical test was conducted by Nappedia.

Commercial disclosure: Nappedia has an affiliate relationship with Saatva. The product link on this page is currently an ordinary, untracked link.

1
Saatva · Primary or earliest located record
First located record for Memory Foam Hybrid Mattress · Medium · 11.5" ↗Reviewed 31 Jul 2026
2
Saatva · Corroborating specification, history, or context
Corroborating or context record for Saatva Memory Foam Hybrid ↗Reviewed 31 Jul 2026
3
Saatva · Current direct-sale policy; applicability labeled in the dossier
Home trial, returns and exchanges ↗Reviewed 31 Jul 2026
4
Saatva · Current direct-sale warranty; applicability labeled in the dossier
Saatva mattress lifetime warranty ↗Reviewed 31 Jul 2026
5
Saatva · Current direct-sale delivery policy
Free white-glove mattress delivery ↗Reviewed 31 Jul 2026
6
Tom's Guide · Independent in-home and panel review with version warning
Saatva Memory Foam Hybrid review 2026 ↗Reviewed 31 Jul 2026
7
Saatva Customer Help Center · Current official specification table
What are the Memory Foam Hybrid specs? ↗Reviewed 31 Jul 2026
8
Saatva Customer Help Center · Current model-by-model manufacturer barrier disclosure
What flame retardants do Saatva mattresses use? ↗Reviewed 31 Jul 2026
9
Saatva Customer Help Center · Current manufacturer fiberglass statement
Do Saatva mattresses contain fiberglass? ↗Reviewed 31 Jul 2026

← Saatva Memory Foam Hybrid family Official product page · not tracked ↗