How Long Does It Take a Nectar Mattress To Expand? What to Expect Step by Step
If you’ve just unboxed a new foam mattress and are wondering “How Long Does It Take a Nectar Mattress To Expand?”, you’re not alone. Many shoppers want to know when the mattress will reach its full size, feel, and firmness so they can plan their first night’s sleep.
Below is a clear FAQ-style guide to what “expansion time” really means, how long it usually takes, and what you can do if it seems slow.
What Does It Mean for a Nectar Mattress to “Expand”?
Foam mattresses are often compressed, rolled, and boxed for shipping. When you open the packaging, air gradually returns to the foam layers and the mattress:
- Rises in height
- Firms up and evens out
- Settles into its intended shape and feel
This process is what people mean when they ask How Long Does It Take a Nectar Mattress To Expand.
How Long Does It Take a Nectar Mattress To Expand in Real Life?
Most boxed foam mattresses begin expanding within minutes of being unrolled. Often, a large portion of the height comes back in the first few hours.
However, it can take up to 24–72 hours for the mattress to:
- Reach close to its full thickness
- Even out across the entire surface
- Lose most of that “just unboxed” feel
Many sleepers find that the mattress is comfortable enough to lie on the same day, but the feel may continue to change slightly over the next couple of days as the foams fully decompress.
Is It Safe to Sleep on It Before It Fully Expands?
A common question related to How Long Does It Take a Nectar Mattress To Expand is whether you must wait the full expansion window before sleeping on it.
In general:
- The mattress often becomes usable the first day.
- Some people choose to wait a few hours after unboxing so it can rise more evenly.
- The comfort and support may feel slightly different after a day or two compared with hour one.
If you do lie on it early, you may notice:
- Softer edges or corners that haven’t fully risen yet
- A slightly different firmness than what you expected at first
These changes are usually temporary and tend to improve as the mattress continues to expand.
What Factors Affect How Fast a Mattress Expands?
Several everyday conditions can influence How Long Does It Take a Nectar Mattress To Expand:
1. Room Temperature
Foam responds to temperature:
- Warmer rooms can help foam become more flexible and expand more easily.
- Cooler rooms may slow the expansion slightly and make the foam feel firmer at first.
2. Humidity and Airflow
- A room with good airflow may help any packaging odors dissipate and allow the mattress to settle.
- Very stagnant air might not stop expansion, but it can make the process feel slower because odors and that “new mattress” experience linger longer.
3. Time Spent in the Box
If a mattress stays compressed for an extended period before unboxing, some areas may:
- Take a bit longer to rise
- Need more time to even out
This doesn’t necessarily mean there is a problem; it may just require more patience.
What If My Nectar Mattress Doesn’t Seem Fully Expanded?
If, after unboxing, you feel that parts of the mattress are lagging behind, here are some simple steps you can try:
- Give it more time ⏱️ – Check again after 24, 48, and 72 hours.
- Let it breathe – Remove all plastic and bedding so air can reach the surface.
- Keep the room at a comfortable temperature – Not too cold, ideally close to typical indoor living temperatures.
- Gently move across the surface – Sitting or lying on the mattress in different spots can sometimes help it settle and expand more evenly.
If certain areas remain significantly lower or misshapen even after several days, some consumers choose to contact customer support for guidance.
How Will I Know When My Mattress Is Fully Expanded?
You’ll usually notice that the mattress is “there” when:
- The height is close to the advertised thickness
- The surface looks level, without deep dips from compression
- The corners and edges no longer appear sharply crumpled or heavily indented
- The overall feel stays consistent from night to night, rather than changing each day
Even then, foam often continues to subtly relax and adapt over the first few weeks of use, which is normal.
✅ Quick Mattress Takeaways
Key points consumers should understand about How Long Does It Take a Nectar Mattress To Expand
- Initial rise is fast: Expansion usually begins within minutes of unboxing.
- Typical window: It can take 24–72 hours for the mattress to come close to full size and feel.
- You can often use it early: Many people start sleeping on their mattress the first day, even if it isn’t 100% expanded.
- Conditions matter:Room temperature, airflow, and time spent in the box can all affect expansion speed.
- Patience helps: Slight unevenness, softer edges, or changing firmness over the first few days are common and usually temporary.
- Watch for persistent issues: If the mattress remains significantly uneven after several days, some buyers seek further guidance from the manufacturer’s support team.
Understanding How Long Does It Take a Nectar Mattress To Expand can make the unboxing experience feel much more predictable. With reasonable expectations, a bit of patience, and a comfortable room environment, most mattresses reach their intended shape and feel within the first couple of days.

