King Lull Mattress at a Glance
The King Lull mattress is a king-size bed from Lull, a brand known for online-first memory foam and hybrid designs. Lull positions the King Lull as a mid-range option that balances comfort and support, typically using multiple foam layers and a pocketed-coil support core. The model is aimed at sleepers who want a traditional innerspring feel with the contouring of foam, without the price tag of premium boutique brands.
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Before buying, it helps to understand the construction, how it feels for different body types, and how it stacks up against other king-size mattresses in the same price bracket.
Construction and Materials
King Lull mattresses generally combine a quilted comfort layer with memory foam and a pocketed-coil base. The exact layer stack can vary by version, but the design goal is to provide pressure relief at the top while keeping the support responsive enough for position changes. Lull typically uses CertiPUR-US certified foams, meaning the foams are made without ozone depleters, heavy metals, or formaldehyde.
What the Construction Means for Sleepers
- Memory foam contouring: helps absorb shoulder and hip pressure, especially for side sleepers.
- Pocketed coils: provide a more responsive, breathable base than all-foam designs.
- Edge support: coils along the perimeter help with sitting on the edge and reduce roll-off.
Firmness and Feel
Most Lull king models are rated around a medium-firm 6 to 7 on a 10-point firmness scale. That middle-ground feel works for a broad range of sleepers, but it is not equally ideal for everyone. Back sleepers often find the balance of cushion and support supportive enough to keep the spine neutral. Side sleepers usually appreciate the contouring at the shoulders and hips, while stomach sleepers may want a firmer surface to prevent the midsection from sinking too deeply.
Couples may benefit from the motion isolation that memory foam and pocketed coils provide, which can limit disturbance when one partner moves or gets out of bed.
King Size and Practical Considerations
The king-size footprint is 76 inches wide by 80 inches long, giving each sleeper roughly 38 inches of personal space. Compared with a queen, a king offers more room for couples, tall sleepers, or those who move a lot during the night. A king Lull mattress requires a king-size foundation or bed frame and appropriately sized sheets and bedding, which are generally more expensive than queen-size equivalents.
Who the King Lull Fits Best
- Couples who want a large bed without paying luxury-brand prices.
- Back and side sleepers who prefer a medium-firm feel.
- Shoppers who want a straightforward online purchase with a risk-free trial period.
Pricing and Value
Lull typically prices the King Lull below many direct-to-consumer competitors with similar coil-and-foam construction. The exact price can vary based on current promotions, but the brand often runs discounts, making the king-size version more accessible than it appears at full price. When evaluating value, it is worth to compare the materials, trial length, and warranty against similarly priced king-size mattresses from other brands.
| Feature | Detail | Context |
|---|---|---|
| Size | King (76" x 80") | Fits most master bedrooms; needs king frame and bedding |
| Firmness | Medium-firm (6–7/10) | Broad appeal; favors back and side sleepers |
| Core | Pocketed coils + foam layers | Balances support, contouring, and breathability |
| Certifications | CertiPUR-US foams | Low-VOC, no ozone depleters or heavy metals |
| Trial | Typically 100+ nights | Lull runs risk-free trial periods on most models |
| Price range | Mid-range for online king mattresses | Often discounted; check current offers |
How It Compares to Other King Mattresses
Against all-foam kings, the Lull king tends to feel more responsive and cooler thanks to the coil base. Against innerspring-only kings, it usually offers better motion isolation and pressure relief. In the same online-direct price tier, competitors may offer different coil counts, foam densities, or trial lengths, so side-by-side comparison on these specifics is worth the time.
Who Should Look Elsewhere
Firmness-sensitive stomach sleepers, those who prefer a very soft or very firm bed, and buyers who want a split-king setup with separate adjustable bases should verify compatibility before choosing the King Lull. The standard king is a single unit, and while it can work with split foundations, it is not inherently designed as a split configuration.