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NightyNight Firm Cooling Gel Memory Foam Mattress in a Box

NightyNight Firm Cooling Gel Memory Foam Mattress in a Box

4.2· 12 ratings

Best price now

$89.99at WalmartObserved at 3:55 PM

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Our take on the NightyNight Firm Cooling Gel Memory Foam Mattress in a Box

The NightyNight Firm is a 6-inch gel memory foam mattress sold compressed in a box, here in a Twin size. The gel-infused foam is meant to sleep cooler than plain memory foam, and the firm feel suits back and stomach sleepers or a guest setup. At $89.99 at Walmart as of November 4, 2026, it is the only new price listed, so there is no recent range to compare against. The thin 6-inch build is the main trade-off: fine for kids, bunks and occasional use, less so for a heavy adult every night.

Best forGuest rooms and spare bedsKids' beds and bunk framesSofa beds and RV or camper useShoppers on a tight budget
Pros
  • Low price for a gel memory foam mattress
  • Firm support suits back and stomach sleepers
  • Gel infusion helps limit heat buildup
  • Ships compressed in a box and expands on its own
  • 6-inch profile fits bunks, trundles and sofa beds
Cons
  • Only 6 inches thick, so less cushioning and durability
  • Firm feel is too hard for many side sleepers
  • Twin is the only size listed
  • No recent price history to judge the $89.99 deal
  • Thin foam may sag sooner under heavier adults

NightyNight Firm Cooling Gel Memory Foam Mattress in a Box prices at every store

  • WalmartNew

    In stockSold by NightyNight

    $89.99Observed at 3:55 PM
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NightyNight Firm Cooling Gel Memory Foam Mattress in a Box price history

Lowest price we've seen: $89.99 on Nov 4 at Walmart. Tracked across 1 store since Nov 4.

What reviewers say

Reception is limited: 4.2 out of 5 from 12 ratings. Buyers generally treat it as a budget guest or kids' mattress rather than a primary bed.

Pros
  • Good value for the price
  • Firm support as described
  • Expands fully within a day or so
Cons
  • Too firm for side sleepers
  • Thin and basic compared with thicker foam mattresses

Specifications

Size
Twin
Type
Gel Memory Foam
Specialty Style
Sofa Bed
Thickness
6 in

Questions and answers

Is the NightyNight Firm mattress worth it?
At $89.99 at Walmart as of November 4, 2026, it is a cheap way to furnish a guest room, bunk or sofa bed. Do not expect the support or lifespan of a thicker mattress for nightly adult use.
Is it good for side sleepers?
Mostly no. A 6-inch firm foam bed gives little give at the shoulder and hip, so side sleepers often feel pressure. Back and stomach sleepers are the better fit.
Does the cooling gel actually keep it cool?
Gel-infused foam runs cooler than plain memory foam, but a 6-inch mattress still sleeps warmer than a spring or hybrid bed. A breathable mattress protector helps.
How long does it take to expand out of the box?
Memory foam in a box usually reaches most of its height within a few hours and fully within 24 to 48 hours. Sleep on it after it has had a day to expand.
What sizes and thickness does it come in?
This listing is the Twin at 6 inches thick. Check the store page for other sizes before buying if you need a Full or Queen.
When is the price lowest?
Budget foam mattresses like this one usually dip during Black Friday, Memorial Day and back-to-school sales. With only one new price listed, $89.99 is the current benchmark to beat.
Where is the NightyNight Firm Cooling Gel Memory Foam Mattress in a Box cheapest?
At Walmart, for $89.99, as of our latest check.
What do buyers say about the NightyNight Firm Cooling Gel Memory Foam Mattress in a Box?
Rated 4.2 out of 5 from 12 ratings.

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