Business Insider called the AS2 the “best mattress for back pain.” Similar to the AS1 but with one additional inch of Bio-Pur®, this mattress will give back and stomach sleepers all the cushioning they need.
Cal King starting at $1599
Enjoy unbeatable comfort and the ultimate sleep experience.
Combining plant-based Bio-Pur® with supportive HIVE® technology ensures a cool, restful sleep no matter your body type. Bio-Pur® responds to pressure in seconds so sleepers never feel “stuck.”
Amerisleep mattresses are designed to offer the best comfort and support for every sleeping position. Sleepers will wake feeling refreshed and ready for the day, thanks to responsive Bio-Pur®, a plant-based memory foam that cushions heavier sections of the body for optimal pressure relief.
California king size mattresses are ideal for couples or anyone who needs lots of room to stretch out.
A California king size mattress is the largest in terms of length, so you’ll never need to worry about personal space.
A California king size mattress is the royal upgrade every couple needs—the 72-inch width accommodates even the most restless sleepers.
California king size mattresses fit in most spacious master bedrooms with ample room to spare.
Setting reasonable expectations with your current budget can help you find a high-quality mattress.
You actually don’t have to spend a ton of money to get a high-quality bed. Mattress companies use marketing techniques to make an average mattress appear like a luxury option, with some charging over $3,000 for a California king size mattress; but that’s all it is—a marketing technique.
The average mattress model starts off at a basic rate, with price increases depending on added features, like gel memory foam or enhanced zoned support technologies.
|Mattress Type||Low End Price||High End Price|
A king size mattress is 80 inches long and 76 inches wide.
Twin - 38" x 75"Kid's room, studio apartments
Twin XL - 38" x 80"College dorm, studio apartments
Full - 53" x 75"Kid's room, studio apartments
Queen - 60" x 80"Master bedrooms, guest rooms
King - 76" x 80"Extra large master bedrooms
Cal King - 72" x 84"Extra large master bedrooms (10' x 12')
Split King - 38" x 80" (x2)Master bedrooms, adjustable beds
Bed in a box mattresses are a popular option that’s quickly becoming more common. Bed in a box brands sell their beds directly to the customer, and their mattress arrives compressed and rolled up in a box for convenient transfer. Unlike brick and mortar showrooms, bed in box brands offer higher quality for a lower price.
Are bed in a box mattresses better quality? Take a look at the difference between Amerisleep’s mattresses and the average foam mattress in-store.
|Average California King
from a showroom
|Free delivery to the lower 48 states||Delivery usually not free|
|Free returns within the sleep trial period
hassle-free pick up
|Free returns only if mattress is in
original condition, pick up not always offered
|100-night, risk-free sleep trial||No sleep trial|
|20-year warranty (10-year full replacement)||10-year full replacement|
|Made with plant-based materials||Foams made with petrochemicals|
|Made in the USA||Origins not always known|
|Manufactured with low VOCs||Off-gassing odors|
Memory foam became popular due to its conforming properties in relieving pressure points—heat and pressure soften memory foam, causing it to form around the body.
Heat retention, however, became a problem with traditional memory foam due to its dense structure.
To combat this, we use plant-based memory foam Bio-Pur®, which is more breathable and more responsive than traditional memory foam.
|Responsiveness||Bounces back in seconds||Bounces back very quickly||Slow to respond, results in “stuck” feeling||Responsive but prone to sagging||Very responsive|
|Pressure-Relief||Exceptional pressure relief||Little to no pressure relief||Good pressure relief||Some pressure relief||Good pressure relief|
|Cooling||More breathable than traditional memory foam||Cooling thanks to the coils in the base||Traps heat||Cooling thanks to the coils in the base||Cooling as long as top layers are aerated|
|Foam quality||Partially plant-based Bio-Pur® material||Usually made with poly-foam pillow tops||Foam usually made with petrochemicals||Not always consistent, depends on the type of foam used in the top layers||Depends on the type of latex used; synthetic latex breaks down faster than all-natural|
Our innovative and proprietary materials let us build one of the most comfortable mattresses ever.
Soft and ultra-breathable cover helps prevent overheating so you can sleep your best.
Eco-friendly Bio-Pur® conforms to the body and springs back to its original shape faster than traditional memory foam
The Affinity layer uses HIVE® technology—hundreds of hexagonal-shaped segments offer even pressure relief and enhanced lumbar support
Sturdy Bio-Core® evenly distributes weight across the sleep surface and extends the lifespan of a California king size mattress past the standard 10 years
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.
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!
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.
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.
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.
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.
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.
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.
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??
I just got married and my wife wanted. A different bed. I already had the AS2 which is more firm, but she wanted a softer one. I sleep on my back and side so the AS3 worked best for both of us. I just got married and my wife wanted. A different bed. I already had the AS2 which is more firm, but she wanted a softer one. I sleep on my back and side so the AS3 worked best for both of us.
A king-size bed is wider and shorter, measuring at 76” by 80”, while a California king size mattress is longer and more narrow at 72” by 84”.
Also known as a “western king” California king size mattresses were created in California to accommodate larger living areas, and have since grown in popularity.
It depends on what you value more—length or width. California king size mattresses are better-suited for sleepers over 6-feet-tall who need the additional legroom. Standard king mattresses are best for couples who prefer extra personal space to get comfortable.
The best California king size mattress should relieve pressure points, especially in heavier sections of the body, evenly support weight, and last at least 7 to 9 years. You can determine the best mattress for your sleep needs by considering your sleeping position and body weight—a mattress should be soft enough to alleviate pressure and firm enough to facilitate proper spinal alignment no matter how you sleep.
Choose mattress firmness based on your body weight and preferred sleep position for pressure point relief and consistent spinal alignment. For example, sleepers over 230 pounds will find themselves most comfortable on firmer mattresses since these beds don’t allow for much sinkage. On the other hand, petite sleepers will like softer beds better because they offer enhanced cushioning comfort.
Each of our mattresses come with a 100-night sleep trial, a 20-year warranty, free shipping, and free returns. If you decide during your sleep trial that the mattress isn’t right for you, just give us a call, and we’ll arrange for it to be picked up free of charge and will issue a full refund.
We offer eight mattress models: five memory foam mattresses and three hybrids—our California king size mattresses range in price from $1199 to $2499.
Our mattresses feature innovative pressure-relieving Bio-Pur® to alleviate aches and pains and prevent future discomfort. Bio-Pur® molds to the body to offer immediate cushioning comfort and relieve tension in throughout your body, especially in the back, shoulders, and hips.
Each of our mattresses (besides the hybrids and AS1) also features HIVE® technology, HIVE® offers zoned support to promote healthy spinal alignment and prevent backaches. HIVE® offers firm support under your torso, head, and feet to maintain healthy alignment and is softer under the shoulders and hips for improved pressure relief.
If you’re looking for the best mattress for back pain, consider our AS2, as it was previously voted by Business Insider as one of the best mattresses for back pain relief.
Memory foam mattresses, on average, last about 7 to 10 years, whereas hybrid mattresses last 6 to 9 years, usually. We build our mattresses with highly-durable materials to help you get the most for your money. Plus, we offer a 20-year warranty with each of our beds, protecting you from manufacturing defects and sags.
Each mattress comes with a 20-year warranty, covering sagging greater than 0.75” and any manufacturing defects causing damage to the mattress.
Best mattress for couples
A Queen is perfect for couples with limited room space or single sleepers who prefer the extra room to get comfortable.
Extra large master
The King provides an additional 6 inches in width. They work well for extra large master bedrooms.
Split-king beds enable couples to raise and lower the head and feet of their side of the bed independently.
100 night trial. Free shipping & returns.