When you purchase a new Nectar mattress, you can sleep on it as soon as it fully expands, which typically takes between 24 to 72 hours. However, it’s often safe to sleep on your new mattress within a few hours of unboxing, if you cannot wait for the complete expansion.
Understanding the Expansion Process of Nectar Mattresses
Nectar mattresses, like many other bed-in-a-box options, are compressed, rolled, and vacuum-sealed for convenient shipping and ease of handling. When you unbox your new mattress, the process of expansion begins, which is also known as “off-gassing” or “decompression.”
What Happens During Expansion?
Once the protective plastic is removed, the memory foam begins to expand as air rushes back into the foam’s open cells. This expansion process not only brings the mattress to its full size and shape but also helps to air out any trapped gases that were sealed in during the manufacturing and packaging process.
Factors Influencing Expansion Time
Several factors can influence how quickly your Nectar mattress will expand, including room temperature, air flow, and humidity. Generally, warmer environments help memory foam expand faster due to the foam’s viscoelastic properties that respond to heat.
Our Top 5 Mattress Picks
Updated September 2026EGOHOME 8-Inch Green Tea Memory Foam Mattress, Full, Medium Firm
Best for most bedrooms. A medium-firm green tea memory foam mattress with a cooling gel layer, delivered rolled in a box.
- Full size, 8 in
- Medium firm
- Cooling green tea gel
- CertiPUR-US, fiberglass free
OhGeni Queen Air Mattress with Built-in Pump, 18-Inch Raised
Best for guests and camping. Inflates in about three minutes with the built-in pump and sits 18 inches off the floor, so it feels like a real bed.
- Queen, 18 in raised
- Built-in pump
- 800 lb capacity
- Waterproof PVC
Novilla 6-Inch Gel Memory Foam Mattress, Twin
Best budget twin. A slim gel memory foam twin that suits kids' rooms, bunk beds and trundles where a thick mattress won't fit.
- Twin, 6 in
- Gel memory foam
- Cooling
- CertiPUR-US
Zinus 8-Inch Green Tea Memory Foam Mattress, Twin
Best-known brand. Zinus's long-running green tea foam design in twin size, with both CertiPUR-US and OEKO-TEX certified materials.
- Twin, 8 in
- Green tea memory foam
- CertiPUR-US & OEKO-TEX
GAESTE 8-Inch Cooling Gel Memory Foam Mattress, Full, Medium Feel
Best for hot sleepers. Cooling gel memory foam with a medium feel, plus a machine-washable, anti-slip cover you can actually clean.
- Full size, 8 in
- Medium feel
- Cooling gel foam
- Washable cover
- Fiberglass free
Can You Sleep on Your Nectar Mattress Immediately?
You might be eager to try out your new Nectar mattress right away, and the good news is that sleeping on it a few hours after unboxing won’t ruin the mattress. While you might notice that the mattress is not quite at its full height or firmness, it should still be comfortable enough for a good night’s rest.
Sleeping on a Partially Expanded Mattress
If you choose to sleep on your Nectar mattress before it’s fully expanded, keep the following in mind:
– The feel may not be indicative of the fully expanded mattress as initial firmness levels and support may vary during the first nights.
– Memory foam’s contouring aspect may be somewhat limited until expansion is complete.
Potential Off-Gassing Smell
One of the concerns with sleeping on the mattress prematurely is the off-gassing odor that comes from the foam’s outgassing process. While this smell is not harmful, it can be unpleasant or bothersome for some people. Good ventilation can help dissipate the odor more quickly.
Optimizing the Expansion Time and Comfort of Your Nectar Mattress
To ensure your mattress expands efficiently and to enjoy optimal comfort as soon as possible, here are some tips:
Optimal Room Conditions
Keep the room at a warm and stable temperature, ideally between 68-72 degrees Fahrenheit (20-22 degrees Celsius). Ensure the room is well-ventilated by opening windows or using a fan to encourage airflow and disperse any off-gassing odors.
Supportive Foundation
Make sure your Nectar mattress is placed on a suitable foundation that provides even support. This can be a box spring, platform bed, or adjustable base. An uneven foundation can impede expansion and affect the final feel of your mattress.
Give It Time
Be patient and give the mattress time to expand. While you can sleep on it within hours, it will reach its peak performance and comfort levels once fully expanded.
Flipping and Rotating
While Nectar mattresses are designed to be used on one side only and should not be flipped, rotating the mattress 180 degrees every few months can promote even wear and extend the mattress’s lifespan.
How to Tell When Your Nectar Mattress is Ready
You’ll know your Nectar mattress is ready for the ultimate sleep experience when:
– It has reached its advertised thickness (usually 10-11 inches).
– The corners are well-defined and have a consistent shape.
– There’s no noticeable off-gassing smell.
– The mattress provides stable and even support when you lie down on it.
Physical Inspection
Perform a visual and physical inspection of the mattress. Check the consistency of the surface and edges to confirm it appears uniform and symmetrical, indicating full expansion.
Comfort and Support Level
Lying on the mattress will also give you an indication—the memory foam should contour to your body without any noticeable dips or sags.
Finishing Thoughts
Selecting a Nectar mattress as your sleep partner is an investment in your sleep health. Understanding the expansion process and having a little patience can go a long way in ensuring you get the most comfort and support from your new mattress. While it can be tempting to jump right into bed after unboxing your new mattress, giving it the recommended 24 to 72 hours to fully expand can enhance your sleeping experience by ensuring maximum comfort, support, and durability. Happy sleeping, and enjoy the restful nights ahead on your Nectar mattress.
