Saatva Inc.
Saatva Firmness Selection Architecture Technical Guide
Manufacturer Whitepaper
Saatva Classic Firmness Options: Coil & Foam Specs
Engineering breakdown of Saatva Classic's three firmness levels: comparing 14.5 vs 13.75 AWG micro-coils, foam ILD ratings, and sleeper match.
Wire Gauge & Comfort Foam ILD Shift
Direct answer summary
Saatva Classic achieves its three distinct firmness levels (Plush Soft ~3/10, Luxury Firm ~6.5/10, Firm ~8/10) through two mechanical modifications: micro-pocket coil wire gauge and comfort foam ILD. The Plush Soft utilizes thinner 14.5 AWG micro-coils paired with soft 14 ILD memory foam and softer quilting foams. The Luxury Firm uses balanced 14.5 AWG coils with firmer polyfoam. The Firm utilizes thicker 13.75 AWG pocket coils and high-density 32 ILD foam.
Key points
Plush Soft uses 14.5 AWG coils with low-density, compliant 14 ILD contouring foam.
Luxury Firm uses 14.5 AWG coils with balanced 24 ILD transition foam for universal support.
Firm uses heavier 13.75 AWG coils and dense 32 ILD support foam for stomach and heavy sleepers.
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3D Layer-Peel Visualizer
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Interactive Exploded Architecture & Layer Inspection
Peel through the physical mattress assembly to audit coil gauge, foam density (PCF), indentation load deflection (ILD), and flame barrier composition.
What's insideDrawing only, layer order not confirmed
Saatva Firmness Layer Architecture layers
Height: 11.50"
Layers: 3 Layers
1/3
All
Active Layer: Quilted Euro Pillow Top
3" (QUILT)Thickness: 3"Material: Organic Cotton & Foam
Layers, top to bottom (3)
Click to expand specsPlush Soft (14 ILD), Lux Firm (24 ILD), Firm (32 ILD)
Thickness3 inches26.1% of stack
MaterialOrganic Cotton & Foam
14.5 AWG (Soft/Lux) or 13.75 AWG (Firm)
Thickness4 inches34.8% of stack
MaterialTempered Pocket Coils
Coil Wire Gauge14.5 AWGFirm support spring
13.0 AWG high-tensile Bonnell coils across all models
Thickness4.5 inches39.1% of stack
MaterialBonnell Steel Wire
Coil Wire Gauge13 AWGFirm support spring
Specifications
Recorded specifications
Values and benchmarks recorded for this question.
| Specification | Measured value | Benchmark | Status |
|---|---|---|---|
| Plush Soft Firmness Rating | 3.5 / 10 (Side Sleepers Under 150 lbs) | Deep Acromion Pocketing | pass |
| Luxury Firm Firmness Rating | 6.5 / 10 (Universal Flagship Setting) | 82% of Saatva Customers | pass |
| Firm Firmness Rating | 8.0 / 10 (Stomach & Bariatric Sleepers) | 13.75 AWG Reinforced Core | pass |
| Lumbar Zone Active Wire | Present in all 3 firmness options | Center Third Patented Wire | pass |
Standards reference: Benchmarks derived from ASTM D3574 (flexible cellular foam), CPSC 16 CFR 1633 (open flame flammability), and clinical capillary closing thresholds (32.0 mmHg).
Checklist
Comparative Spec Verification Checklist
Step-by-step inspection to detect mid-production substitutions and compare component specs.
- 01
Select by Primary Posture
Side sleepers should choose Plush Soft; back/combination choose Luxury Firm; stomach choose Firm.
Watch for: Stomach sleepers on Plush Soft will suffer severe lumbar hyperextension.
- 02
Factor Sleeper Weight
If sleeper is over 230 lbs, step up one firmness level (Luxury Firm -> Firm).
Watch for: Heavy sleepers will bottom out the Plush Soft model onto the Bonnell base coils.
- 03
Verify 365-Night Trial Exchange Fee
Note that exchanging firmness levels incurs Saatva's standard $99 processing fee.
Watch for: Do not guess on firmness without measuring current mattress indentation.
Sources
Sources for this answer
Read the source documents behind the thresholds, measurements, and policy details used here.
View source
ASTM International
Standard Test Methods for Flexible Cellular Materials
ASTM D3574