Ashley Sierra Sleep Sierra Firm Mattress Review

Updated January 24, 2022

The Sierra Sleep Sierra Firm mattress by Ashley is a firm feeling bed that is a very basic and inexpensive mattress that's built with the most fundamental materials.  It makes a good choice if you really want to save money and you're shopping for a guest bedroom or perhaps a dorm room.  If you're looking for detailed information about this bed please read the rest of the review:

Comfort Scale Rating

The Sierra Firm mattress has a firm feel; we rate it a 2 on our 10 point Comfort Scale (1 is hard, 10 is softest).  A firm feeling bed like this one appeals only to people who want a very firm mattress.  If a medium or softer feeling mattress is your preference then you should consider a different bed.

Pros & Cons

PROS CONS
  • Affordably priced
  • Works well as a spare bed
  • Fast and easy shipping to your home
  • No premium materials
  • Firm bed, choose a different model if you want a softer feel 
  • Basic mattress with few comfort features
  • Minimal pressure relieving capabilities

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Pressure Test Results

We've tested the Sierra Sleep Sierra Firm mattress using people who are large, petite, and average-sized. (Learn how we test.) We had them lay on this bed in a back sleeper position and a side sleeper position to determine how the mattress relieves pressure and supports your back.

It's rare for test results to come back scored as 100% 'not recommended' but this mattress has done just that.  This mattress has little to no pressure-relieving capabilities and poor back support which was expected since we know this bed has minimal comfort materials and is a very basic build.  If you look at all the red areas that show up on all the images below you'll see that this mattress causes an excess of pressure throughout the body.  The yellow areas show an increase in pressure while green areas represent good pressure relief.  Light blue areas show where there's proper support in the lower back and side supportive areas, though there's little of that in the images. 

Again, while this bed did test poorly during our pressure testing it really is just meant as a once-in-a-while mattress for guest rooms, pull-out beds, or dorm rooms. 

BACK SLEEPER SIDE SLEEPER
LARGE PEOPLE Largest 10% of adults 210-273 lbs Large back sleeper heatmap Avg Pressure: mmHg - Area: inches2 Large side sleeper heatmap Avg Pressure: mmHg - Area: inches2
AVERAGE PEOPLE Middle 50% of adults 134-218 lbs Average back sleeper heatmap Avg Pressure: mmHg - Area: inches2 Average side sleeper heatmap Avg Pressure: mmHg - Area: inches2
PETITE PEOPLE Smallest 10% of adults 111-135 lbs Petite back sleeper heatmap Avg Pressure: mmHg - Area: inches2 Petite side sleeper heatmap Avg Pressure: mmHg - Area: inches2
BACK SLEEPER
LARGE PEOPLE Largest 10% of adults 210-273 lbs Large back sleeper heatmap Avg Pressure: mmHg - Area: inches2
AVERAGE PEOPLE Middle 50% of adults 134-218 lbs Average back sleeper heatmap Avg Pressure: mmHg - Area: inches2
PETITE PEOPLE Smallest 10% of adults 111-135 lbs Petite back sleeper heatmap Avg Pressure: mmHg - Area: inches2
SIDE SLEEPER
LARGE PEOPLE Largest 10% of adults 210-273 lbs Large side sleeper heatmap Avg Pressure: mmHg - Area: inches2
AVERAGE PEOPLE Middle 50% of adults 134-218 lbs Average side sleeper heatmap Avg Pressure: mmHg - Area: inches2
PETITE PEOPLE Smallest 10% of adults 111-135 lbs Petite side sleeper heatmap Avg Pressure: mmHg - Area: inches2

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The Main Ashley Sierra Sleep Sierra Firm Features in Detail

Ashley Sierra Sleep Sierra Firm mattress cutaway

  1. 1. 1/2" HIgh-Density Quilt Foam 

    This is the comfort foam that is built into the top of the mattress.  This is where you feel the only softness that this bed has to offer.

  2. 2. 2" High-Density Firming Pad

    This firming pad is a thin layer of comfort material that works with the coil system to give you firm support.

  3. 3. Bonnell Coil Unit

    This is a tied coil system that has a very solid feel.  Each coil in this unit is connected to the ones next to it which creates one solid group.

 

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Warranty

The Sierra Sleep Sierra Firm mattress has a 10-year warranty against factory defects.

Conclusion

The Ashley Sierra Sleep Sierra Firm mattress is a super basic mattress without any premium materials.  It's a good choice for a second bedroom, for example; somewhere that would not get a lot of use.  On the flip side, if you're shopping for yourself you'll want to look for a mattress that has more comfort built into it.  In terms of how this bed feels, it's a firm feeling mattress.

This mattress is inexpensive and Ashley Mattress has offered this bed as the most basic, entry-level model in the Sierra Sleep collection.  The Bonnell Coil Unit and a high density firming pad are good features but aren't very plush and this model lacks premium features like memory foam and individually wrapped coils.  Honestly, if you want a spare bedroom mattress or a bed for a dorm room then this bed will suit your needs.  If you're looking for a quality bed that is meant to be your permanent every-night sleeper then this bed is not the best choice.

If you need an affordable mattress as a spare bed for a guest room then this bed will meet that need.  If you're looking for an every night bed for yourself I'd recommend you choose a different model with more comfort features.  Of course, if you're on a very tight budget, you may have no option but a lower-priced model like this.  In that case, just be prepared that this won't be the mattress of your dreams, to say the least.

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Sierra Sleep Sierra Firm Mattress Specifications:

Product Name
Queen Price

$332

Brand
Sierra Sleep by Ashley
Mattress Comfort
Firm
Comfort Scale Number
2
Coil Count 390
Coil Gauge
13
Height
6"
Comfort Padding Layers
  • High-Density Firming Pad
Warranty
  • 10-year warranty against manufacturer's defects
  • No Flip, No Rotate
  • Non-prorated
Back Support System
  • Bonnell Coil Unit
Quilt Top of Mattress
  • 1/2” High-Density Quilt Foam
Edge Support
  • Ashley Edge
Recommended For Side Sleepers Who Weigh
  • None
Recommended For Back Sleepers Who Weigh
  • None

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About The Author Dave Higgins

Dave has worked in the furniture business, focusing on mattresses, for over six years.  He enjoys oil painting in the Impressionist style, playing guitar, and cooking for his family.  Dave also believes that English Bulldogs are the comedians of the canine world.