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Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress

Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress

Best price now

$159.00at wood stockObserved at 11:29 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress

The Ashley Sierra Sleep 6 Inch is a firm, all-foam twin mattress built as a low-cost starter or guest bed. It pairs a quilted 4-way stretch knit cover with foam layers and stands just 6 inches tall, so it suits platform beds, bunk beds and trundles. The twin weighs about 25 lbs, which makes it easy to move and flip. At $159 at wood stock as of November 4, 2026, it sits at the low end of its recent price range, with two stores pricing it new.

Best forKids' rooms and bunk bedsGuest rooms and spare bedsTight budgetsPlatform frames and trundles
Pros
  • Low price for a brand-name twin
  • Firm support suits back and stomach sleepers
  • 6-inch profile fits bunk beds and low frames
  • Light at about 25 lbs, easy to move
  • 5-year limited warranty
  • Soft 4-way stretch knit cover
Cons
  • Only 6 inches of foam, so little cushioning for heavy adults
  • Firm feel is not for side sleepers who want pressure relief
  • No coils or edge support
  • Memory foam label overstates a mostly basic foam build
  • Thin profile can feel the bed frame underneath

Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress prices at every store

  • wood stockNew

    In stock

    $159.00Observed at 11:29 PM
    Visit store
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $227.49Free shippingObserved at 11:29 PM
    Visit store

Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress price history

Lowest price we've seen: $159.00 on Nov 4 at wood stock. Tracked across 2 stores since Nov 4.

What reviewers say

Owner feedback on the Sierra Sleep foam line is mixed but leans positive for the price. Most praise comes from buyers using it as a kids' or guest mattress, while complaints center on firmness and thinness.

Pros
  • Good value for a spare or child's bed
  • Firm, supportive feel
  • Light and easy to handle
  • Cover feels soft
Cons
  • Too firm for some side sleepers
  • Thin foam breaks down over time
  • Little edge support

From wood stock

  • Budget-friendly twin mattress by Ashley's Sierra Sleep line
  • 4-way stretch knit cover for a soft, inviting surface
  • Quilted cover over layers of quality foam
  • 6-inch firm foam construction

About the Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress

The Sierra Sleep Firm Mattress by Ashley offers a comfortable night’s sleep at an affordable price. This budget-friendly twin mattress features a 4-way stretch knit cover that provides a soft and inviting surface. Beneath the quilted cover, layers of quality foam enhance the level of comfort, ensuring you get the rest you need. The combination of these materials creates a supportive and comfortable mattress that balances affordability with quality. This makes the Sierra Sleep Firm Mattress a practical choice for those seeking a firm and supportive sleep surface.

Specifications

Comfort level
firmSource
Mattress height
6''HSource
Queen dimensions
79.5''W x 60''D x 6''HSource
Queen weight
50.0 lbsSource

Questions and answers

Is the Ashley Sierra Sleep 6 Inch twin worth it?
For a kids' room, bunk bed or guest bed on a tight budget, yes. At $159 at wood stock as of November 4, 2026, it costs less than most brand-name twins. Adults who want cushioning should look at a thicker mattress.
How firm is it?
It is firm. The 6 inches of foam give a flat, supportive surface with little sink-in, which suits back and stomach sleepers and kids. Side sleepers often find it too hard.
Does it work on a bunk bed or trundle?
Yes. The 6-inch height and 25-lb twin weight fit most bunk beds, trundles and platform frames. Check your frame's weight limit and rail height first.
What is the warranty?
Ashley covers it with a 5-year limited warranty. That is shorter than the 10 years common on thicker mattresses, which fits its budget tier.
When is it cheapest?
It is already near the bottom of its range at $159 at wood stock as of November 4, 2026. Twin foam mattresses like this one tend to drop during back-to-school and Black Friday sales.
Where is the Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress cheapest?
At wood stock, for $159.00, as of our latest check.
Where can I buy the Ashley Furniture Sierra Sleep 6 Inch Memory Foam Twin Mattress?
2 stores we checked sell it, including wood stock, Amazon.

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Twin dimensions
74.5''W x 38''D x 6''HSource
Twin weight
25.0 lbsSource
Full dimensions
74.5''W x 53''D x 6''HSource
Full weight
34.0 lbsSource
King dimensions
80''W x 76''D x 6''HSource
King weight
63.33 lbsSource
Cover
4-way stretch knit coverSource
Warranty
5-year limited warrantySource