Wave Hybrid Mattress
The Casper Wave Hybrid is a popular mattress combining polyurethane foam layers with pocketed coils. CertiPUR-US certified, which limits certain chemicals, but the mattress still off-gasses VOCs from the foam. Not a plastic-free or organic product.
How scores are calculated
Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.
Packaging (20%): Is the product packaged in plastic? Is it recyclable?
Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?
Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.
This is a rating of this specific product only — not the company. Other products from this brand may score differently.
Last updated: April 8, 2026
Casper's foam mattresses are made primarily from polyurethane foam, which off-gasses VOCs and contains chemical flame retardants. CertiPUR-US certification limits some chemicals but does not eliminate off-gassing.
Why We Rated It This Way
CertiPUR-US certification is a step in the right direction, but Casper's foam mattresses still off-gas VOCs and contain synthetic materials. For a product you sleep on for 8 hours a night, organic materials are worth the investment.
Chemical & Health Analysis
Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.
Polyurethane foam VOCs
Foam mattresses
Respiratory irritation, neurological effects
All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.
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