Casper Sleep Inc.
Casper 10-Year Limited Warranty Agreement
Manufacturer Policy
Casper Mattress Warranty Sag Depth Requirement
Deconstruction of Casper 1.0-inch sagging threshold, 10-year warranty coverage, and photo submission requirements.
1.0-Inch Sag Threshold
Direct answer summary
The Casper mattress limited warranty requires an unweighted physical indentation of at least 1.00 inch (25.4 mm) on the sleeping surface. The warranty covers physical flaws in the foam causing cracking or splitting, as well as unweighted sagging >= 1.0 inch. Casper explicitly excludes normal increases in foam softness and requires that the mattress be supported continuously by a rigid foundation with slats spaced no wider than 4.0 inches apart.
Key points
Requires an unweighted surface depression of 1.00 inch or greater.
10-year limited warranty covering 100% of replacement or repair costs.
Foundation slats must not exceed 4.0 inches apart with center support.
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Warranty Fine-Print & Trial Policy Deconstruction
Calculate proration cliffs, test unweighted sagging ruler thresholds, and verify foundation slat gap compliance before submitting a claim.
Trial, returns and warranty: the fine print
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.
$1,800
$800$2,000$3,500
Year 12 of 25
Year 1 (New)Year 10 (Cliff Edge)Year 25
Prorated Cliff Active
Casper The Casper Original 11" · 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 Casper:
- 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.
Specifications
Recorded specifications
Values and benchmarks recorded for this question.
| Specification | Measured value | Benchmark | Status |
|---|---|---|---|
| Sagging Depth Threshold | 1.00 Inch Unweighted Depression | Direct-to-Consumer Standard | pass |
| Warranty Term Length | 10 Years Full Replacement | Standard 10-Year Warranty | pass |
| Foundation Slat Gap Limit | Max 4.0 Inches Spacing | Platform / Slat Requirement | pass |
| Covered Defects | Foam Cracking, Splitting, Sag >= 1.0" | Manufacturing Structural Flaws | 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
Warranty Claim Diagnostic & Measurement Protocol
Unweighted ruler measurement and photographic documentation steps to avoid warranty claim denial.
- 01
Document Sagging Depth
Position a broom handle across the depression and measure depth with a standard ruler.
Watch for: Do not push the ruler down into the foam core; measure to the resting fabric face.
- 02
Check Base Slats
Measure slat spacing on your bed frame to verify gaps do not exceed 4.0 inches.
Watch for: Avoid using flexible curved spring slats that cause premature center sagging.
- 03
Prepare Purchase Proof
Locate your original Casper order confirmation email and permanent law label photos.
Watch for: Secondhand Casper mattresses carry zero transferrable warranty rights.
Sources
Sources for this answer
Read the source documents behind the thresholds, measurements, and policy details used here.
View source
Federal Trade Commission (FTC)
Magnuson-Moss Warranty Act
15 U.S.C. § 2301