Amerisleep Bio-Pur

Bio-Pur®: Eco-Friendly, Cooler Memory Foam

Our plant-based Bio-Pur® blends contouring comfort with buoyant support to help you get your best night’s sleep yet.

Shop Bio-Pur® Mattresses

Why choose Bio-Pur®?

Bio-Pur® is the perfect answer to a better bed. Available in every Amerisleep mattress, we engineered Bio-Pur® to deliver cooling comfort, responsive support, and healthier sleep.

Memory foam lovers say Bio-Pur® is a huge upgrade, while critics admit it solves all the problems of traditional memory foam. Plus, we proudly manufacture Bio-Pur® in the USA.

Our plant-based Bio-Pur® is significantly more breathable and responsive than traditional memory foam. It snaps back to its original shape in seconds, so it’ll never cause you to uncomfortably sink, and it’s significantly more porous and airy, so you won’t have to worry about night sweats. Even better? Bio-Pur® contains a fraction of the petrochemicals used in other memory foams, so it’s less likely to off-gas and is completely free of harmful substances.

Bio-Pur® vs Traditional Memory Foam

Breathable & Cooling

Unlike the dense construction of traditional memory foam, Bio-Pur®'s large, open-cell structure has a few distinct advantages:

  • Allows air to flow freely
  • Prevents heat build-up
  • Perfect for hot sleepers

Responsive & Supportive

With traditional memory foam, the slow response time can feel like you're sleeping in quicksand. This leads to discomfort and poor spinal alignment. Here's how Bio-Pur® is different:

  • Contours to your body
  • Relieves painful pressure points
  • Provides cushioning and support
  • Bounces back in just seconds

Eco-Friendly Materials

While traditional memory foam is 100% petroleum-based, Bio-Pur® is partially made with renewable plant-based oils. This minimizes our reliance on non-renewable resources and ensures our products are better for you and the planet.

A Healthier Sleep

Many memory foams you see today use harsh chemicals such as benzene, formaldehyde, and more that can cause unpleasant off-gassing.

Bio-Pur®, on the other hand, is:

  • CertiPUR-US® certified
  • Low in volatile organic compounds (VOCs)
  • Naturally resistant to dust mites, mold, and mildew
  • Made without formaldehyde, ozone depleters, prohibited phthalates, PBDEs, mercury, lead, and other heavy metals

Decades of Durability

Most memory foams only last 7 to 10 years. Some deteriorate within 3 to 5 years. Longer lifespans are only available in higher-end memory foam.

We build our mattresses to last. With Bio-Pur®, you get:

  • An industry-leading 20-year warranty
  • Protection against indentations and sagging
Traditional Memory Foam
Dust, Mold, & Mildew Resistant
Low in VOCs

Our Top Products Featuring Bio-Pur®

See why customers love their Amerisleep mattress

We absolutely love our AS3! We both had back pains prior to purchasing this bed and can honestly say, after 4 months, we haven't noticed a single ache or pain since. Would purchase again and again!

Lake Charles, LA

I purchased the AS3 mattress 3 months ago, and it has been a lifesaver. My husband and I have back issues, and we needed a bed that would help us get quality sleep. We have always struggled with being able to sleep through the night due to aches and pains and now that we have been sleeping on our AS3 mattress for 3 months now, we finally are able to sleep comfortably through the ENTIRE night!

Sioux Falls, SD

I purchased the AS3 and couldn't be happier, I now own 2! A king size and a king size and I will never buy another brand again. I would definitely recommend the king size AS3 over and over again, if you're considering buying this mattress because you're not getting great sleep or you're simply due for a new mattress... TREAT YOURSELF. I promise you will not regret it.

Westchester County, NY

We've slept on this bed for 9 months now. It's the perfect blend of softness and support. It's so comfortable we have accidentally slept till noon on many occasions! My husband has had knee and shoulder surgery and this bed is comfortable for him to sleep on his side. My back and hip pain from standing at work all day is decreased. My kids are always trying to sneak in to sleep on it. This is the best bed we've ever owned.


We have had our Amerisleep AS4 for about two months now. It is living up to the hype so far. My husband and I both have back problems and needed support plus give in the mattress. The Amerisleep AS4 fits our needs perfectly (for reference purposes, my husband and I are both under 160lbs). In fact, the first night we had our new Amerisleep, my husband slept for 10 hours straight! That has never happened in the 20+ years we've been married!


Love the mattress! I have back problems and this mattress is so comfortable. I sleep better and the usual soreness I felt every morning with my previous mattresses has disappeared. We liked the first mattress so much, we bought another for the guest room.

Dothan, Alabama

I was skeptical of ordering a mattress online even though I was able to test it in the store prior to ordering. The delivery was a breeze and the mattress didn't even need to off-gas, but it's the sound sleep provided that is the point of this review. I sleep on my back now and haven't in years. Who knew I was a back sleeper? This mattress (A2) is firm and supportive yet still soft and cozy and has provided the best sleep I've ever had. Thanks for making me excited about bed again!

Portland, OR

This is an excellent mattress. I was a bit worried about getting the AS2, as I am primarily a side sleeper, but I am getting the best sleep of my life whether I am on my side or my back. The best part is how sturdy yet quiet the bed is. My partner and I go to sleep and wake up at different times, and neither of us notice when the other gets in/out of bed. I also run pretty hot, and in my previous bed was no stranger to waking up sweaty, but this mattress keeps me cool and dry.


The AS2's firmness is exactly as explained— firmer than the middle-ground AS3 but not super firm which is exactly what my fiancé and I wanted. We really liked knowing that we could exchange it within 100 days if we needed to but we sleep very well on this mattress and intend to keep it for a long long time.

Lansdale, PA

We are both back and side sleepers and the mattress works great for us. This mattress made sleeping with a bad hip before and after hip replacement surgery possible. Our old mattress made sleeping especially on the side intolerable.

Murrieta, CA

I have always had back issues waking up and difficulties getting to sleep on my current mattress and previous ones but when my new mattress was delivered I noticed a difference the first night! I now look forward to using it and sleep like a rock.

Atlanta, GA

This is my first memory foam mattress. I have always had a pillow top. I was afraid to order the wrong type for my body/sleep type. I spoke with customer service and was recommended the AS5 since birth my husband and I are smaller people (I'm 112 pounds and 5'2 and my husband is 5'8 and 165 pounds), and we both are side sleepers primarily (I also sleep on my back). I was worried it would be too soft or not soft enough, but it is perfect.

Pittsburgh, PA

I like a firm mattress and shopped in stores for months trying to find the right one for me. None were comfortable. I took a shot with the Amerisleep AS1 after many reviews said it was a firm mattress. Best decision! It was so comfortable that I turned around and bought one for my daughters full size bed.

Fayetteville, AR

My wife has a bad back so we needed a very firm mattress. Our old mattress was sagging and had to go so we bought a very nice split king mattress but it was just not firm enough. We saw Amerisleep and took a chance. No more back pain - we are amazed but love it. Would highly recommend.

Walker, TX

My wife and I use this bed every single night now. We chose the firm model in hopes we would wake up with less aches and pains after a night of sleep. It’s done that and more! Super comfortable bed while being extremely sturdy. Can’t believe how easy and fast the purchasing process was either. I would highly recommend this bed to anyone and everyone. What are you waiting for??


Frequently Asked Questions

What is Bio-Pur®?

Bio-Pur® is Amerisleep’s proprietary plant-based memory foam crafted to offer all the benefits of memory foam but with fewer drawbacks. Hot sleepers and sleepers over 230 pounds can sleep on our foam beds without any discomfort, something that can’t be said for many other memory foam mattresses. With its eco-friendly construction and enhanced breathability and responsiveness, our Bio-Pur® provides everything you need from memory foam for a better night’s rest.

Is Bio-Pur® safe?

Yes! Bio-Pur® is completely safe. Now, we should say, we do not recommend our mattresses (or any foam mattress) to children younger than 8 because memory foam can pose a suffocation risk. But in terms of harmful chemicals and unpleasant odors, our mattress is completely free of both.

How else does Amerisleep differentiate its mattresses?

In addition to Bio-Pur®, Amerisleep memory foam mattresses feature HIVE® (their exclusive zoned support technology) and Bio-Core® (their long-lasting and durable base). Amerisleep’s hybrid mattresses use hundreds of pocketed coils that provide additional bounce to your bed while minimizing motion transfer. Each Amerisleep mattress also comes with a 100-night sleep trial and their industry-leading 20-year warranty covering indentations and sagging beyond ¾ of an inch.

What is memory foam?

Since the 90s, memory foam has only gotten more and more popular. From seat cushions to couches and mattresses, memory foam is used in countless products to improve comfort.

Memory foam is a variation of poly-foam designed with viscoelastic properties—this foam responds to heat and pressure, so it molds to your body when you climb into bed and snaps back into shape when you get up. All memory foam is poly-foam, but not all poly-foam is memory foam.

Both poly-foam and memory foam are made from a combination of petrochemicals, and these chemicals are what give foam its “foam-like” consistency. Without petrochemicals, there is no foam. With that, though, many people complain of a chemical-like off-gassing smell from their foam mattress. While this scent does eventually go away, most people feel uneasy sleeping on a bed full of chemicals.

At Amerisleep, we knew there had to be a better way of doing things. That’s why we started producing our foams with a combination of petrochemicals and plant-based oils. We found that by replacing some of the petrochemicals with plant-based oils, you can produce a foam that offers all of the same benefits as memory foam with fewer drawbacks. The result is cool, contouring, and adaptable Bio-Pur®.

Why does memory foam have a chemical smell?

Memory foam has a chemical-like smell because it contains petrochemicals. Petrochemicals are used in a variety of products and people often describe their off-gassing scent as smelling “new” (think new cars, new paint, and even new clothes and books).

While off-gassing doesn’t pose a real threat to our health, it can be bothersome to some. Those who are sensitive to smells or prone to migraines may want to avoid their new mattress for a few days while it airs out. After a few days, your mattress should smell fresh and chemical-free. If not, you may want to contact the retailer and ask them for a replacement.

At Amerisleep, we designed Bio-Pur® to have minimal off-gassing, making it a healthier alternative to traditional memory foam.

What is plant-based memory foam?

Plant-based memory foam is similar to traditional memory foam, but it’s made with fewer petrochemicals and more plant-based oils. It’s an eco-friendly alternative for people that want a healthier sleep solution, as well as those who prefer to shop green. Plant-based memory foam, like Bio-Pur®, is naturally more breathable and responsive than traditional memory foam, so it minimizes the two big issues with memory foam (heat retention and uncomfortable sinkage). These eco-friendly foams are also less likely to off-gas than traditional foam mattresses.

Are plant-based foams safe?

Yes, plant-based memory foams like Bio-Pur® are considered safer than traditional foam because they contain fewer petroleum-based compounds.

Sleepers may also prefer plant-based foam because it doesn’t have a chemical-like smell. Although most traditional memory foams are safe, many people have concerns due to the chemical odor they emit. When you feel like you’re sleeping on a toxic mattress, it’s hard to get a peaceful, healthy sleep.

Our customers love sleeping on our mattresses


Would recommend our mattresses to a friend.


Think our mattresses are comfortable.


Agree our mattresses provide good support.

Want more info? Check out our mattress reviews

Read reviews
Most Leading National Brands
100-Night Sleep Trial
20-Year Warranty
No Motion Transfer
Unlimited Pressure Relief
Durable Material
Eco-friendly Manufacturing
Made in the USA

$900 - $1500

$2500 - $40001

1 Cost based on average price of standard queen size mattress.

Back to top

100 night trial. Free shipping & returns.

Subtotal $0.00
Shipping FREE
Apply promo code
Estimated total $0.00