What’s Inside a Mattress? Breaking Down the Layers That Matter

Vincent DeFazio • June 24, 2025
0 minute read
layers of a mattress

Buying a mattress is one of the most important investments you’ll make for your comfort, health and overall well-being. But let’s face it, choosing the right one can feel overwhelming. With so many brands, materials and sleep surface technologies on the market, how do you know which mattress is actually built to give you a good night’s sleep?


Mattresses might look similar from the outside, but their inner construction is what determines everything from support and pressure relief to motion isolation and longevity. Knowing what each layer does helps you compare models more effectively and choose a mattress that fits your specific sleep needs.


1. The Quilted or Comfort Layer

This is the top layer you feel when you first lie down. It's designed for softness and comfort, often made from quilted materials, polyurethane foam, convoluted foam and plush fabrics. It may include:


  • Poly-soy foam: A supportive and responsive comfort layer made from a soy-enhanced polyurethane blend, used in many of our pillow-top and plush models.

  • Convoluted foam: Also known as “egg crate” foam, this layer helps with airflow and pressure relief while adding softness.

  • Natural latex: Found in select models, latex adds bounce, durability, and gentle contouring without the sink-in feel of memory foam.

  • Pillow-top or box-top: These cushioned layers provide plush comfort and help define whether a mattress feels soft, medium or firm at first touch.


This layer plays a key role in your initial impression of the mattress, whether it feels plush, medium or firm right off the bat.


2. The Comfort Layer: Pressure Relief and Motion Isolation

Beneath the quilted surface, the comfort layer is where the mattress begins to work with your body instead of just lying beneath it. This layer provides pressure relief, helping reduce tension in key areas like the shoulders, hips and lower back.


When it comes to traditional and natural mattress options, innerspring and latex materials offer unique benefits:


  • Latex: Known for its natural resilience and breathability, latex provides responsive cushioning that adapts to your body without the “sinking” feel of memory foam. It’s also naturally hypoallergenic and antimicrobial, making it a smart choice for eco-conscious or sensitive sleepers. Because latex retains its shape well, it offers both comfort and durability, giving you a gentle lift that supports spinal alignment.

  • Innerspring: All of Twilight Bedding’s mattresses use traditional innerspring support systems, either individually wrapped pocket coils or Bonnell coils, to provide durable support, edge stability and a responsive feel. These systems are ideal for sleepers who prefer a mattress with bounce and strong overall support.


3. The Transition Layer: Bridging Comfort and Support

This layer acts as a buffer zone between the softer comfort materials and the firmer base. It often uses denser foam to help ease the body into the support core without feeling too rigid.


Without a transition layer, the mattress might feel uneven or allow your body to sink too far, throwing off spinal alignment.


This layer ensures a smooth, supportive progression that enhances durability and prevents bottoming out.



4. The Support Core: Where Stability Comes From

The support core is the foundation of the mattress. It determines how well your spine stays aligned and how long your mattress maintains its shape. There are several types of support systems:


  • Pocketed coils (individually wrapped springs): Reduce motion transfer and provide targeted support.
  • Open coils (traditional innersprings): Offer bounce and breathability, though with more motion transfer.
  • High-density foam cores: Common in all-foam models, these are durable and great for motion isolation.
  • Zoned support systems: Vary firmness in different areas to support heavier parts of the body, like the hips and shoulders.


5. Edge Support: Holding Everything Together

Edge support isn’t always visible, but it’s something you’ll feel, especially if you tend to sleep near the edge of the bed or sit on it while getting dressed. Some mattresses reinforce the perimeter with:


  • Foam rails: Prevent collapse and make the edges more usable.
  • Stronger coils around the border: Offer a firmer edge in hybrid or innerspring models.


A mattress with solid edge support feels more stable and helps maximize sleeping surface.


6. The Cover: Breathability and Protection

Finally, the cover encases the entire mattress and plays a key role in airflow, moisture-wicking and durability.

Common materials include:


  • Cotton or bamboo blends: Naturally breathable and soft to the touch.
  • Aloe vera-infused polyester: Offers a smooth feel and may help with moisture control.
  • Stretch-knit or quilted fabrics: Add softness and enhance the overall appearance.


A high-quality cover isn’t just cosmetic; it enhances your sleeping experience and helps regulate temperature throughout the night.


What to Look for Based on Your Needs

When shopping for a new mattress, think about how these layers come together for your specific sleep style:


  • Back sleepers: Look for balanced support and light contouring.

  • Side sleepers: Softer top layers to relieve pressure on hips and shoulders.

  • Stomach sleepers: A firmer feel with strong support to keep hips from sinking.

  • Hot sleepers: You may benefit from innerspring mattresses and breathable covers. Coil systems offer better airflow than foam mattresses. Avoid memory foam, which is typically the worst material for hot sleepers.


Discover the Craftsmanship of Our Luxury Mattresses in Spokane

Visit Twilight Bedding today to explore our collection and learn more about what makes a mattress truly exceptional from the inside out. Call our North Spokane showroom at (509) 413-2431 or our Spokane Valley Showroom at (509) 926-2333 for more information.


Let our sleep experts guide you to a better night's rest with craftsmanship, comfort and complete transparency.

By Vincent DeFazio June 24, 2025
Struggling with restless leg syndrome or frequent movement at night? Twilight Bedding in Spokane, WA explains how the right mattress can make a difference.
By Vincent DeFazio June 24, 2025
What should you do with an old mattress? Twilight Bedding in Spokane, WA explores recycling, donation, and disposal options to help you make the right choice.
By Vincent DeFazio May 21, 2025
Sleep is a vital part of childhood growth, development, mood and academic performance. While it may seem convenient or cost-effective to pass down a used mattress from an older sibling or relative, the truth is that hand-me-down mattresses may do more harm than good for your child’s health and sleep quality. At Twilight Bedding, we know families are always looking for smart ways to save money, but cutting corners on your child’s sleep setup can lead to long-term consequences. Mattresses Break Down Over Time  Even high-quality mattresses are not built to last forever. Over years of use, materials like foam, coils and padding begin to break down, losing their ability to provide proper support and alignment. An old mattress that has already conformed to someone else’s body is unlikely to offer the spinal support growing kids and teens need. Children and teenagers are constantly developing. Their spines, muscles and joints need a mattress that promotes healthy alignment and adapts to their growing bodies. A sagging or worn-out mattress can contribute to poor posture, disrupted sleep and even back pain in younger sleepers. Hygiene and Allergens Are a Real Concern Another key reason to skip the hand-me-down mattress? Hygiene. Older mattresses can harbor years of built-up dust, allergens, dead skin cells, sweat, bacteria and even mold, especially if they’ve been stored improperly. Young sleepers are more vulnerable to allergens and respiratory issues, which can be made worse by sleeping on a used mattress. If your child suffers from allergies or asthma, a secondhand bed could quietly be making things worse night after night. And while it may not be pleasant to think about, bed bugs or dust mites are also a risk with used mattresses, especially if they’ve changed hands or locations multiple times. Buying new helps you avoid all these potential health hazards. Lack of Support Affects More Than Just Sleep Sleep quality is just as important as the number of hours spent in bed. If a mattress doesn’t support your child properly, it can lead to tossing and turning, body aches and even a lack of deep, restorative sleep. This has a direct impact on: Mood and emotional regulation School performance and focus Physical development and immune function Behavior and energy levels Teens, in particular, are going through rapid physical and hormonal changes that require consistent, quality rest. Giving them a mattress that’s past its prime can hinder both their physical and emotional well-being. One Size Does Not Fit All Just because a mattress worked for one person doesn’t mean it will work for someone else. Factors like weight, sleep position and sensitivity vary significantly between individuals. Your growing child or teen may need something firmer, softer or cooler than the person who used the mattress before them. When you buy new, you can choose the right size (Twin XL, Full, etc.), firmness and materials that best support your child’s current stage of development and continues to serve them well for years to come. A New Mattress is an Investment in Their Future Think of a mattress like you would a pair of shoes. You wouldn’t hand down worn-out shoes and expect them to support someone through miles of running or walking. A mattress is no different. I's a foundation for healthy rest, which affects every part of your child’s life. At Twilight Bedding, we carry a full range of affordable, high-quality mattresses perfect for kids, teens and college-bound young adults. Whether you’re shopping for a first “big kid” bed, upgrading for a growth spurt or preparing for a dorm room, we’re here to help. We Make It Easy for Families to Shop Smart We understand that raising kids comes with lots of expenses, which is why we offer: A variety of mattresses at different price points Long-lasting, child- and teen-friendly options that won’t wear out quickly In-store guidance from sleep specialists who understand what growing bodies need Financing options to make it even easier to invest in better sleep Stop by One of Our Spokane Showrooms and Find the Right Mattress for Your Child Your child deserves more than someone else’s leftovers when it comes to sleep. Let us help you find a mattress that promotes better health, better sleep and a better future. You can learn more by calling our North Spokane location at (509) 413-2431 for or our Spokane Valley showroom at (509) 926-2333.
Show More