Lull Original vs Casper The One
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
| Feature | Lull Original | Casper The One |
|---|---|---|
| Overview | ||
Type | foam | Memory Foam |
Firmness 1 = softest, 10 = firmest | 5 / 10 | 6.5 / 10 |
Queen Price Current / sale price | $679 | $799 |
Trial Period Return window | 365 nights | 100 nights |
Warranty | Lifetime | 10 years |
| Performance Ratings | ||
Cooling Hot sleepers | Average | Moderate |
Motion Isolation Partners, light sleepers | Excellent | Excellent |
Pressure Relief Hip/shoulder pain | Excellent | Good |
Edge Support Sit/sleep near edge | Average | 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 | Available | Affirm |
| Materials & Safety | ||
Certifications Organic / non-toxic | None listed | CertiPUR-US |
Off-Gassing New-foam smell concern | — | CertiPUR-US certified foam |
| Best For | ||
Ideal sleeper profiles |
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| Actions | ||
Need Help Deciding?
For most sleepers, we recommend the Lull Original over the Casper The One. It scores higher in pressure relief, edge support, price-to-value and offers strong overall value at $679 (vs $799). The Casper The One is the better choice only if you have a strong preference for that brand's specific feel or design.
Lull Original vs Casper The One: What Actually Differs
The Lull Original is a foam 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 10" for the Lull Original — a 1.0" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. The Casper The One is the firmer of the two at 6.5/10 (medium-firm), and the Lull Original sits at 5/10 (medium) — a meaningful enough gap that sleeper position and weight should drive the choice. The single largest performance gap is in pressure relief: the Lull Original rates noticeably higher than the Casper The One, which is the deciding factor if that dimension is high on your list. On a Queen, the Lull Original runs $679 versus $799 for the Casper The One — roughly $120 (15%) less, which is enough to factor into the decision unless the pricier model wins clearly on the specs you care about. Trial periods aren't symmetrical either: the Lull Original ships with a 365-night sleep trial versus 100 nights for the Casper The One, giving you a longer in-home runway to send it back if the feel doesn't land.
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 6.5/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 5/10).
Firmer at 6.5/10 vs 5/10 — stomach sleepers need the extra support to keep the pelvis from sinking and arching the lower back.
Cooling rated the same on both — neither has a heat-management edge in our spec data.
Durability and edge-support ratings are equivalent — either holds up.
Softer at 5/10 vs 6.5/10 — lighter sleepers compress less, so they typically need the softer of two options to get proper contouring.
Motion isolation rated the same on both — neither has a transfer-disturbance edge.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Lull Original | $1,998 | $679 | Save $1,319 |
| Casper The One | $999 | $799 | Save $200 |
The Lull Original is the budget choice at $679 — $120 less than the Casper The One ($799). That's a 15% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation. Both are currently below MSRP.
Lull Original
Strengths
- ✓365-night trial matches Nectar — best trial period available for under $1,000
- ✓Lifetime warranty at a budget-friendly price
- ✓Three foam layers provide meaningful pressure relief
- ✓Strong Amazon presence makes purchasing and returning easy
Considerations
- —No cooling technology — not for hot sleepers
- —All-foam — less durable edge support than hybrids
Casper The One
Strengths
- ✓Three-layer foam build with Casper Core support
- ✓Strong motion isolation for an all-foam bed
- ✓Split King is sold from the PDP
Considerations
- —No coil edge feel
- —No active Snow cooling package
- —Medium-firm feel is less plush than Cloud One
Who Should Buy Which?
Choose the Lull Original if you…
- →Side sleepers / pressure relief
- →Sitting near the edge
- →Budget-conscious shoppers
- →Trial-period sensitive buyers
Choose the Casper The One if you…
- →Organic / non-toxic priority shoppers
- →Firmer support seekers