Serta Perfect Sleeper Hillgate 3 Series Cushion Firm Pillow Top Review – A Balance Of Comfort And Support?

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Serta created the Perfect Sleeper line with the help of the National Sleep Foundation. With these mattresses, their main goal was to combat issues such as sleeping hot, partner disturbance, and lack of support.

The Hillgate 3 Series Cushion Firm Pillow Top is a hybrid mattress that incorporates a cooling gel foam and individually wrapped coils. The mattress is designed for a balance of comfort and support. 

This review will go over the construction of the mattress and the main takeaways consumers should know about before deciding to purchase the product.

Who Will Like This Mattress…

  • Back sleepers. This mattress is near the middle of Serta’s firmness scale. Medium-firm mattresses are often best for back sleepers. This mattress should support you well if you sleep primarily in this position.
  • Side sleepers who prefer a firmer mattress. While it may be a little firm for some side sleepers, a number of reviews suggest this mattress is a good pick for side sleepers and doesn’t exacerbate hip, knee, or shoulder pain. If you are a side sleeper who prefers a little more firmness, this could be a good fit for you.
  • Hot sleepers. The mattress’s gel foam is designed to dissipate heat, and the individually wrapped coils promote airflow throughout the mattress. You shouldn’t be sleeping hot on this mattress.

RELATED: Best Reviewed Mattresses For Side Sleepers

Who May Not Like This Mattress…

  • Stomach sleepers who need more support. While this mattress may be firm enough for some stomach sleepers, some may need more support when sleeping in this position. If this is the case with you, you might consider a firmer mattress in the Perfect Sleeper line.
  • Side sleepers who prefer a softer mattress. This mattress promises decent pressure relief, but it may be too firm for some. If you sleep primarily on your side and need more pressure relief, you might want to look at a softer mattress.

Construction And Materials

A mattress with its credentials.

The Hillgate 3 Series Cushion Firm Pillow Top mattress is approximately 13.25” high and contains the following materials and layers:

  • FireBlocker® Fiber
  • Cool Twist® Gel Foam
  • Serta® Support Foam
  • 739 Custom Support® Firm Individually Wrapped Coil System
  • Total Edge® Foam Encasement

Firmness And Feel

This mattress is near the middle of Serta’s firmness scale, skewing toward the softer side. Medium-firm mattresses are usually a good option for back sleepers or for side sleepers who are looking for a firmer mattress.

A scale for mattress firmness

Most Common Pieces Of Praise: What Makes This Mattress Stand Out?

  • Buyers are generally pleased with the level of support and comfort the mattress provides. “It is very good for a person who wants a firm mattress, yet needs some cushioning for the shoulder and hip,” a reviewer wrote.
  • People say the temperature control technology works well, so they don’t overheat in their sleep.

Most Common Complaints And Other Things to Note

  • Some buyers note durability issues and say the mattress starts to sag after a few weeks or months of use. “This one started out great, and 1.5 months into it, it already sagged SO much in the middle,” a reviewer wrote.
  • Some people have claimed the mattress doesn’t have good motion transfer control, so they are easily disturbed by their partner moving around at night. “It says it is supposed to reduce movement from your partner and it does not at all,” one review says.
  • Though the mattress has Total Edge® Foam Encasement, people report that the edges may not be firm enough. “When trying to sleep, it feels like I am about to [roll] off,” one reviewer wrote.
  • According to a few buyers, the mattress can take some time to break in and feel soft. One buyer wrote: “Even though it’s a pillow top, this mattress is hard as a rock. We’ve had it for a week now (It took over 3 weeks for delivery) and it hasn’t softened up any.”

Why Pick This Over Other Serta Models?

This model is a hybrid mattress, and Serta also offers memory foam mattresses and innerspring mattresses. This offers the support and contouring of springs and the and hybrid innerspring coil and memory foam mattresses.

This mattress is medium-firm, which makes it a good fit for a variety of sleeping positions. Serta offers both firmer and softer mattress options with its various models.


The Hillgate 3 Series Cushion Firm Pillow Top mattress is approximately 13.25” high and contains FireBlocker® Fiber, Cool Twist® Gel Foam, Serta® Support Foam, 739 Custom Support® Firm Individually Wrapped Coil System, and Total Edge® Foam Encasement.

This mattress is toward the middle of the firmness scale. It may be too soft for stomach sleepers, but back sleepers and some side sleepers may find this mattress to be a nice fit.

All images from Serta

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Marten Carlson

Marten is Senior Editor at Mattress Clarity. He covers the mattress industry as well as sleep science news. He is specifically interested in the connection between sleep and overall health.Marten has written for media publications like Consequence of Sound and received a master’s degree in Film Studies from Emory University.He comes from Franklin, Indiana, and spends all the time he can writing, directing, and acting in films. He has directed genre short films and features. His newest film, Starlets, recently premiered at the River Town Film Festival in Clinton, NJ. He also stars in the upcoming thriller, Sour Bear. His next film, At The Hop, is a hot rod actioner with a horror twist.
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