Average Lifespan by Density
- Low Density (20–25 kg/m³): 3–5 years
- Medium Density (28–32 kg/m³): 6–8 years
- High Density (33–40+ kg/m³): 8–10 years
Lifespan depends on material density, usage frequency, and sleeper weight — higher density foams generally last longer.
Source: Sleep Foundation: How Long Should a Mattress Last, Sleep Foundation: When You Should Replace Your Mattress, Sleep Foundation: Mattress Durability Explained
Factors That Affect Durability
Body weight, humidity, foundation type, and usage frequency all influence foam longevity.
Support Research
Studies show higher density foam maintains compression resistance longer and reduces sagging.
Source: Sleep Foundation: How Foam Density Is Measured
When to Replace
Replace your mattress if:
- You wake with stiffness or pain
- Visible sagging appears
- Support feels uneven