Nectar Ultra 15 King Mattress - Medium Firm Cooling & Support

Our review of the Nectar Ultra 15 King mattress finds it best suited for sleepers who want a medium firm feel with advanced cooling and deeper pressure relief. The single biggest reason to consider this mattress is the combination of four pressure relief layers and enhanced cooling technology that target back and hip support while keeping surface temperature more consistent. Setup is straightforward and the year-long trial removes much of the risk, so this mattress is an easy option for couples and back sleepers seeking firmer, breathable foam comfort.

Key Features

• 365-night home mattress trial: The full year-long trial lets you test the mattress in all seasons before deciding it fits your sleep needs.
• 4 pressure relief layer design: Extra contouring foam provides deeper cushioning for the hips and lumbar region, helping reduce pressure points for many users.
• 4x more cooling fibers: A cooling fabric with temperature regulating phase change material helps manage surface heat for a cooler feel through the night.
• Zoned ergonomic support layer: Zones of firmer support under the hips and lighter contouring at the shoulders promote better spinal alignment for back and side sleepers.
• Simple to set up: The mattress ships compressed and expands once unrolled, reaching usable condition within 24 hours for quick setup at home.
• Safe and fiberglass free: Made without common harmful substances, offering a cleaner materials profile for the bedroom.

Who It's For

The Nectar Ultra 15 King is ideal for back sleepers and combination sleepers who prefer a medium firm surface that still provides noticeable contouring. Couples who value cooling and pressure relief together will appreciate the extra cooling fibers and zoned support.

Side sleepers who need very soft shoulder cushioning may prefer a softer model, and people who experience uneven support or specific low back issues should try the mattress during the 365-night trial before committing. Those wanting a traditional innerspring feel should look elsewhere.

Pros & Cons

Pros

• Deep contouring foam layers deliver strong pressure relief for hips and lower back.
• Enhanced cooling with 4x more cooling fibers and phase change material keeps the sleep surface cooler than many foams.
• Year-long home trial and easy 24-hour setup reduce purchase risk and hassle.

Cons

• Some users report mixed impressions of firmness and occasional uneven support, so individual comfort can vary.
• All-foam construction may not suit those who prefer the bounce of coils.

Specifications

Our Verdict

The Nectar Ultra 15 King mattress is a strong choice for sleepers who want a medium firm foam mattress that balances cooling, contouring, and zoned support. With a full year trial and clear pressure relief benefits, it represents good value for back sleepers and couples who prioritize cooler nights and deeper lumbar support.

Frequently Asked Questions

How long until the mattress is ready to sleep on?
The mattress expands on setup and is typically snooze ready within 24 hours, though full expansion can continue after that.

Is this mattress good for back pain?
Many customers report reduced back and hip discomfort due to the extra contouring foam and zoned support, but results vary by individual.

Can the mattress feel too firm for side sleepers?
Side sleepers with very sensitive shoulders may find the medium firm feel a bit too supportive and should use the 365-night trial to confirm comfort.