Sealy Response Cooper Mountain IV Cushion Firm Mattress Review

Updated February 11, 2020

Sealy's Cooper Mountain IV Cushion Firm 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's pros and cons.

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

Comfort Scale Rating

The Sealy Response Cooper Mountain IV Cushion Firm mattress is a firm-feeling mattress and we rate it 3 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 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
  • Trusted brand
  • Tested very well
  • Too firm for some

See the bed

Pressure Test Results

We pressure tested the Cooper Mountain IV Cushion Firm 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 tested well overall, which is great for a firm mattress. We see really good support with an even distribution of weight. The encased coil system helps a lot with this because the coils support right where needed. And the SealyCool Gel Memory Foam added to the center third supports the lower back and aligns the spine. There's also surprisingly good pressure relief, which I attribute to the contouring characteristics of an encased coil system combined with the high-quality foams that are used.

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 Mattress Key Features

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

    This outer layer of coils gives the edge support that increases the durability of the mattress, increases the amount of sleepable surface, and makes the side easier to sit on.

  2. 2. Zoned Support with SealyCool Gel Memory Foam

    The cushioning foam is infused with gel, which makes it durable and flexible. It's added only to the center third of the bed to give better support to the lower back.

  3. 3. MoistureProtect

    The cover is made with moisture-wicking fabric to keep you dryer and cooler all night.

Comfort Depth Video

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

Jed's Comfort View

Andrew's Comfort View

Warranty

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

Conclusion

The Sealy Response Performance Cooper Mountain IV Cushion Firm mattress tested well for all sleeper-types, a pretty solid feat of accomplishment for a firm mattress. It gives good pressure relief despite being firmer, due to its encased coil system being very contouring and some premium pressure-relieving foams. It also has great back support, the encased coil system pinpoints support to the right areas and the SealyCool Gel Memory Foam added to the center third ensures that the lower back has sufficient support.

The DuraFlex Edge has a lot of benefits that would be especially beneficial to those who have a sleep partner, including making the mattress comfortable all the way to the edge. This mattress also does a good job of canceling motion transfer, so you won't feel your partner's movements.

I'd highly recommend this bed to anyone looking for a firm mattress. It's somewhat expensive, but if you have the budget for it, it'll support you well and keep you comfortable.

See the bed

Sealy Response Cooper Mountain IV Cushion Firm Specifications:

Product Name
Queen Price

$1,675

Brand
Sealy
Comfort Scale Number
3 (Firm)
Coil Count
911
Coil Gauge
15
Height
12.5"
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.