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What is a Deep Mattress: Optimal Comfort and Size Explained

From the Puffy Editorial Team | 5 min read.
What is a Deep Mattress: Optimal Comfort and Size Explained

In recent years, the deep mattress has become a symbol of luxury in the bedroom. But what exactly is a deep mattress, and how does it differ from standard options? This comprehensive guide explores everything you need to know about deep mattresses, including their dimensions, benefits.

What is Considered a Deep Mattress?

A deep mattress, often referred to as a thick or extra-deep mattress, stands out due to its significant depth. Unlike standard mattresses, which typically range from 8 to 12 inches in depth, deep mattresses exceed this standard thickness, offering extra layers of cushioning and support.

How Deep is a Deep Mattress?

Understanding the actual depth of a deep mattress helps in making an informed purchase:

  • Standard Deep Mattresses: These typically range from 12 to 15 inches in depth. They offer extra cushioning compared to regular mattresses but are not excessively tall.
  • Extra Deep Mattresses: Mattresses that are considered extra deep can range from over 15 inches to 20 inches or more. They provide a significant amount of cushioning and are often used in luxury bedding setups.
  • Measuring for Depth: To determine the depth of a mattress, measure from the bottom where it rests on the box spring or platform to the top of the mattress.

Deep Mattress Size

Deep mattresses are available in all standard bed sizes, but their distinguishing feature is the additional height. Here’s a closer look at deep mattress sizes:

  • Standard Sizes: Deep mattresses come in twin, full, queen, king, and California king sizes, matching the dimensions of traditional mattresses in terms of length and width.
  • Height Variations: The key difference is in the height. While standard mattresses typically range from 8 to 12 inches, deep mattresses start at 12 inches and can go much higher.
  • Room Proportions and Aesthetics: It’s essential to consider the proportions of your room. A very high mattress might overwhelm a small space visually.
  • Bed Frame Compatibility: Deep mattresses require sturdy bed frames that can support their additional weight. Some bed frames may also need to be adjusted for height.

Extra Deep Mattress

Extra deep mattresses are the epitome of luxury and comfort in the mattress world. These are their defining characteristics:

  • Thickness: Generally, any mattress over 15 inches is considered extra deep, with some models reaching up to 20 inches or more.
  • Construction: They often feature multiple layers, including memory foam, gel, innerspring coils, or a combination (hybrid), providing a unique blend of comfort and support.
  • Customization: Many high-end brands offer customization options for extra deep mattresses, tailoring them to individual preferences.

Puffy mattresses, known for their superior comfort and support, are adapting to the trend of deeper mattresses, offering options that provide a plush, luxurious sleep experience.

Interested in how Puffy stacks up against other brands? Check out our mattress comparisons: Puffy vs Purple, Puffy vs Nectar, Puffy vs Casper, Puffy vs Leesa, Puffy vs Saatva, Puffy vs DreamCloud, and Puffy vs Tuft and Needle.

Benefits of a Deep Mattress

The benefits of a deep mattress are manifold and can significantly enhance your sleep quality:

  • Superior Comfort: The additional layers in deep mattresses provide a plush, luxurious feel, conforming to the body and offering enhanced comfort.
  • Advanced Support: Particularly beneficial for side sleepers, people with chronic pain, or those who require extra cushioning, deep mattresses provide superior support to different body parts.
  • Durability: The robust construction of deep mattresses often means they have a longer lifespan compared to thinner models.
  • Aesthetic Appeal: Deep mattresses often carry a luxurious, opulent aesthetic, elevating the overall look of the bedroom.
  • Reduced Motion Transfer: Thicker mattresses, especially those with memory foam or hybrid constructions, are effective at isolating motion, making them ideal for couples.

Choosing the Right Deep Mattress

Selecting the right deep mattress requires careful consideration of several factors to ensure that it meets your individual sleep needs:

  • Material Quality: Prioritize mattresses made with high-density foams, durable springs, or a combination of both in hybrid designs. Quality materials are essential for longevity and maintaining the structural integrity of a deep mattress.
  • Firmness Level: Deep mattresses come in various firmness levels. Choose one that aligns with your comfort preferences and sleeping style. Side sleepers might prefer a softer feel, while back or stomach sleepers may benefit from a firmer mattress.
  • Sleeping Position: Consider how you typically sleep. Side sleepers often need more cushioning for their hips and shoulders, while back and stomach sleepers require firmer support to keep their spine aligned.
  • Body Weight: Your weight can influence how a mattress feels. Heavier individuals may need a firmer option to prevent sinking too deeply into the mattress, whereas lighter individuals might prefer a softer feel.
  • Temperature Regulation: If you tend to sleep hot, look for a deep mattress with cooling technologies, such as gel-infused memory foam or breathable cover fabrics.

If you’re considering a deep mattress, Puffy Monarch Mattress offers an option that might meet your needs, combining deep cushioning with the necessary support for a restful night’s sleep.

Check out Puffy mattress reviews from real customers and see how we compare with other brands.

Deep Mattresses and Bedding

When it comes to deep mattresses, standard bedding might not suffice due to the extra thickness. Here’s what you need to consider:

  • Deep Pocket Sheets: Ensure your fitted sheets are designed for deep mattresses. Regular sheets may not have sufficient depth, causing them to slip off.
  • Mattress Protectors: Choose a mattress protector specifically made for deep mattresses. This will ensure a snug fit and proper protection.
  • Comforters and Duvets: Consider the extra height of your mattress when selecting a comforter or duvet. You may need a larger size for adequate coverage.

Maintenance and Care of Deep Mattresses

Proper maintenance is key:

  • Regular Rotation: To ensure even wear, rotate the mattress periodically.
  • Adequate Support: Ensure your bed frame can support the extra weight of a deep mattress.

Use our store locator to find the closest furniture or mattress store near you and feel the cloudlike comfort of our Puffy Mattress in person.


Deep mattresses represent a shift towards more luxurious, supportive sleep solutions. Whether you opt for a standard deep mattress or go for an extra deep option, understanding the nuances of these mattresses can help you make a more informed decision.

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