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 Published feel or standardized wording | Medium-Soft | Medium-Firm |
Queen Price Current / sale price | Check retailer | Check retailer |
Trial Period Terms from the linked seller | 365 nights at Lull | ✓ 100 nights at Casper; returns after 30 nights; free eligible return |
Warranty | Lifetime | 10 years |
| Performance Ratings | ||
Cooling Hot sleepers | Average | Average |
Motion Isolation Partners, light sleepers | Excellent | Excellent |
Pressure Relief Shoulder and hip cushioning | 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 |
Financing | Available | Affirm |
| Materials & Certification Scope | ||
Listed certifications / claims Check model and material scope | None listed | None listed |
Certificate limitations Not an odor or safety guarantee | Confirm the certificate for the exact model and covered materials. A material certificate does not certify every part of a mattress or guarantee no odor. | Confirm the certificate for the exact model and covered materials. A material certificate does not certify every part of a mattress or guarantee no odor. |
| 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. Our catalog rates it higher for pressure relief, edge support; check current linked-seller prices and terms before deciding on value. 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 construction 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-soft) — 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. The linked-seller trial periods aren't symmetrical either: the Lull Original is listed with 365 nights at Lull, versus 100 nights at Casper; returns after 30 nights; free eligible return for the Casper The One.
Which Is Better For Your Sleep Style?
Higher pressure-relief rating, which is what protects hip and shoulder contact points in the side position.
Medium-Firm includes the option closest to a balanced medium feel for back sleepers (vs Medium-Soft).
Medium-Firm includes the firmer published option (vs Medium-Soft), which may better suit shoppers who prefer more surface support.
Cooling rated the same on both — neither has a heat-management edge in our spec data.
stronger perimeter / edge support — the two specs heavier sleepers should weigh most.
Medium-Soft includes the softer published option (vs Medium-Firm), which can make contouring easier for lighter sleepers.
Motion isolation rated the same on both — neither has a transfer-disturbance edge.
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 available
Considerations
- —No coil edge feel
- —No active Snow cooling package
- —Medium-firm feel is less plush than Cloud One
Who Should Buy Which?
The Lull Original is the better fit when:
- →You sleep on your side and prioritize stronger pressure-relief data.
- →You sit or sleep near the edge and want the stronger perimeter rating.
- →You want more time under the linked seller's trial or comfort policy.
- →You prefer a softer, more cushioned feel.
The Casper The One is the better fit when:
- →You prefer firmer surface support.