Purple Mattress vs Casper The One
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
Pricing unavailable — visit Purple for current rates
Check current price at Purple →| Feature | Purple Mattress | Casper The One |
|---|---|---|
| Overview | ||
Type | Gel Grid | Memory Foam |
Firmness 1 = softest, 10 = firmest | 6.5 / 10 | 6 / 10 |
Queen Price Current / sale price | Check retailer | $799 |
Trial Period Return window | 100 nights | 100 nights |
Warranty | 10 years | 10 years |
| Performance Ratings | ||
Cooling Hot sleepers | High | Low |
Motion Isolation Partners, light sleepers | Good | Excellent |
Pressure Relief Hip/shoulder pain | Excellent | Good |
Edge Support Sit/sleep near edge | Fair | Fair |
Durability Long-term performance | Good | Good |
| Compatibility & Features | ||
Adjustable Base Head/foot elevation | ✓ Yes | ✓ Yes |
Split King Support Two Twin XL per couple | ✓ Yes | ✓ Yes |
Dual Comfort Zones Different firmness per side | — | — |
Smart Features App, sensors, auto-adjust | — | — |
Financing | Affirm, Klarna | Affirm |
| Materials & Safety | ||
Certifications Organic / non-toxic | CertiPUR-US | CertiPUR-US |
Off-Gassing New-foam smell concern | CertiPUR-US certified foam | CertiPUR-US certified foam |
| Best For | ||
Ideal sleeper profiles |
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| Actions | ||
Need Help Deciding?
For most sleepers, we recommend the Casper The One over the Purple Mattress. It scores higher in motion isolation, price-to-value and delivers stronger overall value. The Purple Mattress is the better choice only if you have a strong preference for that brand's specific feel or design.
Purple Mattress vs Casper The One: What Actually Differs
The Purple Mattress is a gel grid build, while the Casper The One is a memory foam — that single difference drives most of the cooling, motion, and feel decisions below. The Casper The One stands 11" tall versus 9.5" for the Purple Mattress — a 1.5" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. Both sit at roughly 6.5/10 on the firmness scale — a medium-firm feel — so neither one is the answer if you need a dramatically different support level. The single largest performance gap is in motion isolation: the Casper The One rates noticeably higher than the Purple Mattress, which is the deciding factor if that dimension is high on your list. On a Queen, the Casper The One runs $799 versus $1,399 for the Purple Mattress — roughly $600 (43%) less, which is enough to factor into the decision unless the pricier model wins clearly on the specs you care about.
Which Is Better For Your Sleep Style?
Higher pressure-relief rating, which is what protects hip and shoulder contact points in the side position.
Firmness of 6/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 6.5/10).
Firmer at 6.5/10 vs 6/10 — stomach sleepers need the extra support to keep the pelvis from sinking and arching the lower back.
Cooling rating not available for one or both mattresses — spec not available.
Durability and edge-support ratings are equivalent — either holds up.
Softer at 6/10 vs 6.5/10 — lighter sleepers compress less, so they typically need the softer of two options to get proper contouring.
Higher motion-isolation rating, which means less disturbance when a partner moves or gets out of bed.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Casper The One | $999 | $799 | Save $200 |
| Purple Mattress | $1,499 | $1,399 | Save $100 |
The Casper The One is the budget choice at $799 — $600 less than the Purple Mattress ($1,399). That's a 43% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation. Both are currently below MSRP.
Purple Mattress
Strengths
- ✓Unique gel grid technology
- ✓Temperature neutral
- ✓Excellent pressure relief
- ✓No off-gassing
Considerations
- —Priced above entry-level options in this category — reflects proprietary GelFlex Grid manufacturing — the polymer grid requires specialized tooling and processes that foam production does not
- —Unique feel not for everyone
- —Limited edge support
Casper The One
Strengths
- ✓Zoned Support (shoulder/hip differentiation)
- ✓Solid motion isolation
- ✓Open-cell foam for breathability
- ✓100-night trial
Considerations
- —No active cooling
- —Fair edge support
- —All-foam (no coil bounce)
Who Should Buy Which?
Choose the Casper The One if you…
- →Couples / light sleepers
- →Budget-conscious shoppers