Sealy Response Cooper Mountain IV Cushion Firm Pillow Top Mattress Review

Updated February 11, 2020

Sealy's Cooper Mountain IV Cushion Firm Pillow Top mattress is part of their Response Performance Collection. We tested all of Sealy’s Response mattresses for a detailed and comprehensive review. Read on for our detailed assessment of Cooper Mountain IV Cushion Firm Pillow Top's pros and cons.

Sealy Response Cooper Mountain IV Cushion Firm Pillow Top mattress on top of a box spring

Comfort Scale Rating

The Sealy Response Cooper Mountain IV Cushion Firm Pillow Top mattress is a firm-feeling mattress and we rate it 4 on our 10 point Comfort Scale (a 1 is hard, 10 is softest). Only those who like a firm mattress will like this, but it's not a hard mattress.

Expert Video Review of the Cooper Mountain IV Cushion Firm Pillow Top bed

Here’s our quick Video Review. It highlights the features, benefits and our impression.

Pros & Cons

PROS CONS
  • Good contouring and support
  • Edge support makes entire surface sleepable
  • Added support to the center third for the lower back
  • Sealy's a longstanding, trusted brand
  • Tested very well for back sleepers
  • Adjustable-base compatible
  • Too firm for some
  • Not good for side sleepers

See the bed

Pressure Test Results

We pressure tested the Cooper Mountain IV Cushion Firm Pillow Top mattress with small/petite, average and big/large body size people on their sides and on their back sleeping positions to measure the support and comfort.

The Cooper Mountain IV Cushion Firm Pillow Top tested well for back sleepers, not so well for side sleepers. This isn't unexpected when looking at a firm mattress, and while it's important to look at the support, the comfortability is more up to your preferences. Our testing here did show good back support, which is where we see light blue. The warm colors (red, orange, yellow) show more pressure, which might be uncomfortable. We don't really see that for the back sleepers, meaning there's good contouring and pressure relief. The side sleepers had more of the red, showing that they feel more pressure in those areas. If you know you love a firm mattress, this bed will work well to support you. If you think something a little softer might be better, we've reviewed the Response collection which has similar models in different comfort levels.

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

Sealy Response Cooper Mountain IV Cushion Firm Pillow Top Mattress Key Features

Sealy Cooper Mountain IV Cushion Firm Pillow Top cutaway
  1. 1. DuraFlex Edge System

    There's an extra layer of coils around the edge to provide a more stable edge, improving durability, allowing you to sit on the side comfortably, and creating an even feel all the way across the surface.

  2. 2. Zoned Support with SealyCool Gel Memory Foam

    This gel memory foam is added only to the center third of the bed, so it supports the lower back better, with a flexible feel that's very durable.

  3. 3. MoistureProtect

    The cover fabric wicks moisture away from you as you sleep, keeping you dry and comfortable all night.

Comfort Depth Video

We measured how far your hips and shoulders sink into the Sealy Response Cooper Mountain IV Cushion Firm Pillow Top mattress with different body types.

Jed's Comfort View

Andrew's Comfort View

Warranty

The Sealy Response Cooper Mountain IV Cushion Firm Pillow Top mattress comes with a 10-year warranty for factory defects.

Conclusion

The Cooper Mountain IV Cushion Firm Pillow Top mattress is in the Sealy “Performance Line” collection, just below the “Premium” line. It's a firm mattress but is on the more neutral side of firm at a 4 on our 10 point Comfort Scale. It gives good support to the back, which is enhanced by the SealyCool Gel Memory Foam in the center third of the mattress. This added layer provides the lower back with some extra support, ensuring that the spine stays aligned. In our testing, back sleepers got good pressure relief as well, although side sleepers did not. So, if you sleep on your side, make sure you really know you like a firm mattress before deciding on this one. I would recommend this bed to back sleepers as a high-quality neutral-firm option. 

It'll also work well for couples, as it has good edge support and minimal motion transfer. These are good for expanding your sleep surface so you have enough space, and for avoiding being woken up by a partner's movements. The encased coil system is what really helps reduce motion transfer, and it also does a good job of providing precise support and contouring to relieve pressure better. This bed is very durable, so it'll provide you with good support for many years.

See the bed

Sealy Response Cooper Mountain IV Cushion Firm Pillow Top Specifications:

Product Name
Queen Price

$1,749

Brand
Sealy
Comfort Scale Number
4 (Firm)
Coil Count
911
Coil Gauge
15
Height
14"
Comfort Padding Layers
Warranty
  • Non-prorated
  • No Flip, No Rotate
  • 10-year warranty against manufacturer's defects
Back Support System
Quilt Top of Mattress
Edge Support

About The Author Juliana

Juliana is a digital content analyst who has taken a deep dive into the mattress industry. She spends her free time hanging out with her friends (read: her cats), and trying to get creative with some painting or sewing.