Sleep Number P-5 VS. I-LE – Which Mattress Will Suit You Best?

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The P-5 is Sleep Number’s most popular mattress, with a great balance of firmness and cushion. Those who are looking for a little bit extra may want to splurge on the I-LE model. We’ve put together a guide filled with details on each mattress to help you decide which one is best for you.

Key Similarities

  • Both models are pillow top mattresses (European-style vs. Duvet-style)
  • A variety of standard sizes – including FlexTop
  • Individual or dual air chamber options with DualAir™ adjustability

Both come with this optional feature:
FlexFit™ Adjustable Bases

Key Differences


  • 11” mattress profile
  • European style pillow top design that includes 2” of hypersoft quilting foam for a plush surface
  • 2” of proprietary PlushFit foam- supportive foam is designed exclusively for Sleep Number to naturally conform to your curves
  • 5 zones specifically designed to contour to your head, shoulders, lower back, hips, and knees
  • Mattress fabric is made with a rayon/polypropylene blend for smoothness and durability
  • $2,099.99 for a Queen


  • 14” mattress profile
  • Duvet-style pillowtop that includes: hypersoft quilting foam for a plush surface
  • 3” of Exclusive Comfort Layer foam – enhanced with a breathable airflow design to help balance your sleeping temperature
  • 2” foam base pad underneath the air chamber(s)
  • Polyester/polypropylene soft and breathable fabric so you sleep comfortably.
  • Sleep IQ Technology is included
  • $4,899 for a Queen size

What I Found From Several Live Chat Sessions

After speaking with Sleep Number Customer Service representatives, I learned about a few extra details that may help you decide between a P-5 or an I-LE mattress.

  • Mattress Top: The mattress tops are both pillowtops but they have different styles and can be accessed in the mattress differently. The European-style of the P-5 is less tall and has a smaller pillowtop than the I-LE. It can be accessed from one zipper in the mattress where you can get to all the components. The I-LE has a larger pillowtop and its own zipped up portion of the mattress (for two zippers total), according to Customer Service.
  • Popularity: The P-5 model is Sleep Number’s most popular bed. The salesperson I spoke to at a Sleep Number store said it had a good balance between cushion and natural firmness from the air chambers.
  • Firmness: The I-LE has more layers, so it may come as no surprise that it is the least firm of both mattresses. While P-5 is very popular, the Customer Service representative told me that, people who “love the cloud-feel or softer mattresses ” will generally get the I-LE because of its duvet-style pillowtop.

Related: Best Mattress

Which Should You Pick?

P-5 if…

  • You are a Side Sleeper. Customer Service representatives told me that the P-5 would be a better choice than the I-LE for side sleepers because the 2” PlushFit comfort foam layers contains five zones for body contouring and pressure relief – including the hip area. She said: If you want to feel the pressure point relief in targeted areas of your body to ensure that you’re properly supported throughout the night, I would strongly recommend the p5 for you.
  • You Want To Save Some Cash. There is a $2,800 price difference between Queen size P-5 and I-LE mattresses. Deciding on the P-5 means you will not get the soft duvet-style pillowtop or a 3” enhanced foam comfort layer with breathability, but it does make it easier to consider accessories like Sleep IQ Technology or the FlexFit Adjustable Base.

Read our full Sleep Number P-5 review.

I-LE if…

  • You Are A Hot Sleeper. The 3” exclusive comfort foam layer in the I-LE is designed for airflow and breathability, making it a cooler mattress than the P-5, which has no cooling technology. The I-LE has cooling built into the comfort layer and not the mattress top like the I-8 model or I-10 model.
  • You Like Cushioning. The I-LE is a better fit for those who aren’t interested in a naturally firm mattress. You can still adjust your level of support with your Sleep Number setting, but the I-LE’s 3” foam comfort layer and tall, soft duvet-style pillow top will keep you nicely cushioned while you sleep, as compared to the P-5.

Read our full Sleep Number I-LE review.

My Personal Opinion

If you choose the bestselling P-5 mattress over the I-LE model, you will save about $2,800 on a Queen size bed. You could actually purchase two Sleep Number beds for the price of the I-LE mattress.

Here is what you get for the price difference:

  • Sleep IQ Technology
  • 2” foam base pad
  • 3” Exclusive Comfort Layer – foam layer with breathability to keep you cool
  • Duvet-style luxurious pillowtop
  • 3” more inches of mattress profile height (11″ vs 14″)

Personally, I would choose the P-5 mattress over the I-LE model for not only the cost savings, but because you get a foam layer that comes with 5 areas of pressure relief and body contouring.

As someone who sleeps on their side frequently, I like that I will have added pressure relief in that area, even if I am getting 1” less of foam thickness than I would with the I-LE.

Overall, I think there is a reason why people like the P-5 model. It is a good mix of Sleep Number features and provides a balance of cushion and firmness.

Read our general Sleep Number review.

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Gravatar for Katie Golde

Katie Golde

Katie manages the day to day operations of the Mattress Clarity news site and reviews sleep products in addition to writing and editing sleep news.She hails from Austin, where she lives with her growing family. She is a Certified Sleep Science Coach and has a master’s degree in Journalism from Northwestern University and has a background in health and science content. Her work can be found in print and online publications like Discover Magazine, USA Today and The Huffington Post.