How Long To Let Nectar Mattress Expand: What To Expect After Unboxing

If you’re wondering “How Long To Let Nectar Mattress Expand” after it arrives in a box, you’re not alone. Many people unbox a new foam mattress and are unsure when it’s safe to sleep on, whether it needs a full day to puff up, or what to do if it still looks a bit flat.

This FAQ-style guide explains how long to wait, what’s normal during expansion, and when to be concerned, so you can set up your new mattress with confidence.

How Long To Let Nectar Mattress Expand After Unboxing?

Most compressed foam mattresses are designed to expand quickly once removed from their packaging. In general, it’s common to:

  • See the mattress reach most of its height within a few hours
  • Allow up to 24–72 hours for full expansion and fine-tuning of firmness and feel

When people ask “How Long To Let Nectar Mattress Expand”, they’re usually asking two slightly different things:

  1. When is it safe to lie or sleep on it?
  2. When is it fully expanded to its intended height and firmness?

For many sleepers, it is possible to rest on the mattress the same day it’s opened, often within a few hours. However, full expansion can take longer, especially at the corners or edges.

Why Does a Nectar-Style Mattress Take Time to Expand?

Foam mattresses are compressed, rolled, and vacuum-sealed for shipping. When you open the plastic, air re-enters the foam and the mattress begins to rise.

Several factors affect how quickly it expands:

  • Room temperature: Foam tends to expand a bit faster in a warmer room.
  • Room ventilation: Fresh air can help any temporary smells dissipate and may support a more comfortable setup experience.
  • Foam layers and thickness: Mattresses with multiple layers or thicker profiles may take longer to reach their final shape.

Allowing enough time for expansion helps the mattress reach its intended height, support, and feel.

Can You Sleep on It Before It Fully Expands?

Many people do sleep on their new mattress the first night. Often, it is:

  • Usable within a few hours of unboxing
  • Still subtly changing feel over the next day or two

If you’re deciding how long to let Nectar mattress expand before sleeping on it, consider:

  • If the mattress looks significantly compressed or uneven, waiting longer can help it normalize.
  • If the height is close to what you expect and it feels comfortable and supportive, light use is typically fine.

Using it right away usually doesn’t stop it from continuing to expand, but giving it extra time before heavy use may support a more even final shape.

What If My Mattress Hasn’t Fully Expanded After 24 Hours?

It’s not unusual for some foam mattresses to still look slightly off—especially at the corners or edges—after the first day.

Here are a few things to check:

  • Is the room warm enough?
    Very cold rooms can slow expansion. A moderate, stable room temperature can help.

  • Are the corners still compressed?
    Lightly smoothing or patting the corners can sometimes help them regain shape, but avoid bending or folding the mattress.

  • Is it gradually improving?
    Many mattresses keep expanding and settling for up to 72 hours, even if the change is subtle.

If the mattress remains significantly indented, lumpy, or much shorter than expected after several days, that’s a sign to review the product’s guidelines or support resources for next steps.

How Long To Let Nectar Mattress Expand: Common Follow-Up Questions

Do I Need to Keep It Flat on a Bed Frame While It Expands?

Yes, it’s best to place the mattress on a stable, supportive surface—such as a platform, slatted base with adequate spacing, or another compatible bed frame—while it expands. Letting it sit partly folded, leaning, or unsupported could affect its ability to expand evenly.

Should I Remove All Plastic Right Away?

Once you’re ready for the mattress to expand, remove all outer plastic. Leaving plastic in place can trap heat and limit airflow, both of which may interfere with normal expansion and comfort.

Is the Temporary Smell Normal?

Many new foam mattresses have a noticeable “new mattress” or “foam” smell at first. This is often stronger right after unboxing and tends to fade with:

  • Good ventilation (open windows or doors if possible)
  • Time (often a couple of days)

If you are sensitive to smells, you may prefer to let the mattress air out for a day before sleeping on it.

What If I Wait Too Long to Unbox the Mattress?

If the boxed mattress is stored for an extended period after delivery, it may affect how well or how quickly it expands. Most manufacturers recommend unboxing within a relatively short time window after receiving it, rather than leaving it compressed for months.

If you’ve waited a long time to open it and notice issues like persistent flat spots or incomplete expansion, that can be a sign the foam was compressed longer than ideal.

✅ Quick Mattress Takeaways

Key points consumers should understand about How Long To Let Nectar Mattress Expand

  • Initial expansion is fast: Most of the rise often happens within a few hours of unboxing.
  • Full expansion takes time: Expect up to 24–72 hours for the mattress to reach its intended height and feel.
  • You can often sleep on it the first night: As long as it looks reasonably even and feels supportive, early use is common.
  • Corners and edges may lag: Slightly compressed corners after 24 hours are not unusual and often improve over the next day or two.
  • Environment matters: A moderate room temperature and some airflow can support more consistent expansion and help any initial smell fade.
  • Extended storage in the box isn’t ideal: Unbox within a reasonable timeframe to help the mattress expand properly.

Understanding How Long To Let Nectar Mattress Expand helps set realistic expectations for those first few nights and reduces worry if the mattress doesn’t look perfect right away. With a bit of time, a suitable room environment, and a supportive base, most foam mattresses settle into their intended shape and comfort level over the first couple of days.