Serta iSeries Hybrid 100 Firm
Mattress Ratings & Reviews

81/100

Very Good

Based on 109 real owner experiences with this mattress.

Back Support

Pressure Relief

Sleep Quality

Stays "Cool"

Value

N/A

Warranty Service

N/A

Average Lifespan

N/A

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Back Support

Pressure Relief

Sleep Quality

Stays "Cool"

Value

N/A

Warranty Service

N/A

Average Lifespan

N/A

Shop this Bed

on serta.com

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Take the

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Write a review of this product

FILTER

109 total ratings, 4 with reviews

Sort by:

BenClinton, TN

Review left on May 24, 2022

Slightly better than sleeping on the ground

We bought this mattress from Mattress Firm about 5 years ago. It has been the most God awful decision we’ve made. The mattress got worse with time. I will never buy another hybrid or memory foam mattress again. Finally pulled the trigger ona real investment in sleep (100% Talalay) which will be arriving this week. To say I’m ecstatic to get rid of this Serta is a massive understatement!

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 5 years

Condition: Moderately worn

35 - 44 years old

Male

Side Sleeper

200-250 lbs

Prefers Harder Feel

See full review

MargaretPhiladelphia, PA

Review left on Feb 28, 2021

No edge firmness at all, broken down so as to slip off edge

This mattress has 0 edge support. It’s completely broken down. Warranty process is beyond difficult to get help. $1200 wasted!

This review is for Serta iSeries Hybrid 100 Firm

Owned for: More than a year

Condition: Slightly worn

Over 65 years old

Female

Back Sleeper

100-150 lbs

Prefers Harder Feel

See full review

MikeHighland Park, NJ

Review left on Aug 14, 2020

Worst Bed That I Have Slept On

We bought this mattress at Mattress Firm based on the salesperson's recommendation. It is the worst mattress that I have ever slept on. It hurts my knees, hips and back while sleeping. I wake up stiff and sometimes have back spasms. We paid a decent amount of money for it and it was a bad purchase. We are finally getting a new mattress soon. I can't wait to get rid of this bed.

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 3 years

Condition: Like new

45 - 54 years old

Male

Side Sleeper

250-300 lbs

Prefers Medium Feel

Back Pain

See full review

KellyFort Walton Beach, FL

Review left on Jun 2, 2019

It says Firm and Firm it is

We tried the Queen iseries 100 Firm at the store and fell in love with it. Was just right. We purchased a King size. We had it about a week and it feels nothing like the floor model. It is very firm. I’m able to sleep pretty good but I wish it felt like the floor model. We went back to the store to make sure we weren’t just thinking this in our minds. Nope there is a huge difference between the one we got and the one we tested. The sales lady said to give it at least 20 days and to even walk on the bed to break it in. Like a new pair of boots. So we are gonna give it some more time and see if it softens up. I’ll keep you posted

This review is for Serta iSeries Hybrid 100 Firm

Owned for: Less than a year

Condition: Like new

55 - 64 years old

Female

Side Sleeper

150-200 lbs

Prefers Medium Feel

Acid Reflux, Arthritis, Back Pain, Fibromyalgia, Neck Pain, Sleep Apnea, Sleeping Hot

See full review

Chicago, IL

Review left on Aug 21, 2025

Ratings from this sleeper:

Back Support

5/ 5

Pressure Relief

4/ 5

Sleep Quality

5/ 5

Stays "Cool"

5/ 5

Value

N/A

Warranty Service

N/A

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 8 years

Condition: Slightly worn

35 - 44 years old

Female

100-150 lbs

Hip Pain

Los Angeles, CA

Review left on Mar 27, 2025

Ratings from this sleeper:

Back Support

4/ 5

Pressure Relief

3/ 5

Sleep Quality

5/ 5

Stays "Cool"

5/ 5

Value

N/A

Warranty Service

N/A

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 4 years

Condition: Moderately worn

Under 25 years old

Female

Back Sleeper

< 100 lbs

Prefers Medium Feel

Back Pain, Hip Pain, Neck Pain, Scoliosis

Powhatan, VA

Review left on Mar 1, 2025

Ratings from this sleeper:

Back Support

4/ 5

Pressure Relief

4/ 5

Sleep Quality

5/ 5

Stays "Cool"

4/ 5

Value

N/A

Warranty Service

N/A

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 6 years

Condition: Very worn

55 - 64 years old

Female

Side Sleeper

100-150 lbs

Prefers Harder Feel

Acid Reflux, Allergies, Back Pain, Hip Pain, Neck Pain

Flagstaff, AZ

Review left on Jan 23, 2025

Ratings from this sleeper:

Back Support

4/ 5

Pressure Relief

4/ 5

Sleep Quality

5/ 5

Stays "Cool"

4/ 5

Value

N/A

Warranty Service

N/A

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 7 years

Condition: Moderately worn

35 - 44 years old

Female

Side Sleeper

150-200 lbs

Prefers Harder Feel

Back Pain, Restless Leg, Scoliosis, Sleep Apnea

Melbourne, FL

Review left on Nov 21, 2024

Ratings from this sleeper:

Back Support

5/ 5

Pressure Relief

4/ 5

Sleep Quality

4/ 5

Stays "Cool"

4/ 5

Value

N/A

Warranty Service

N/A

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 5 years

Condition: Like new

45 - 54 years old

Male

Back Sleeper

200-250 lbs

Prefers Harder Feel

Back Pain

Lawrence, KS

Review left on Nov 20, 2024

Ratings from this sleeper:

Back Support

4/ 5

Pressure Relief

3/ 5

Sleep Quality

4/ 5

Stays "Cool"

4/ 5

Value

N/A

Warranty Service

N/A

This review is for Serta iSeries Hybrid 100 Firm

Owned for: 3 years

Condition: Slightly worn

Over 65 years old

Female

Side Sleeper

100-150 lbs

Prefers Harder Feel

Acid Reflux, Arthritis, Back Pain, Restricted Mobility, Hip Pain, Neck Pain, Osteoporosis, Sleeping Hot

2 3 4 5

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Serta iSeries Hybrid 100 Firm
Mattress Ratings & Reviews

Slightly better than sleeping on the ground

No edge firmness at all, broken down so as to slip off edge

Worst Bed That I Have Slept On

It says Firm and Firm it is

Find the Right Bed

Compare Side-by-Side

Popular Mattress Comparisons

Discounts

GoodBed Cash Back

Expert Reviews

Popular Online Brands

Popular Store Brands

Write a Review

Mattress 101

The GoodBed Matching Quiz

Expert Reviews

Customer Reviews

Serta iSeries Hybrid 100 Firm Mattress Ratings & Reviews

Slightly better than sleeping on the ground

No edge firmness at all, broken down so as to slip off edge

Worst Bed That I Have Slept On

It says Firm and Firm it is

Serta iSeries Hybrid 100 Firm
Mattress Ratings & Reviews