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Lull

Lull Original 10 Inch California King Mattress – 5 Layer Memory Foam Mattress in a Box – Medium-Firm Cooling Gel Foam Bed Mattress with Breathable Cover & 365-Night Trial – White-Grey

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Availability: In Stock.
Fulfilled by Lull
Arrives Saturday, Aug 8
Order within 14 hours and 35 minutes
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Size: California King


Set name: 10'' Original Lull


Features

  • CALIFORNIA KING COMFORT FOR EVERY SLEEP POSITION This 10 California king mattress offers a balanced medium-firm feel designed to support back, side, and stomach sleepers, helping promote proper alignment and pressure relief across a wider, more spacious sleep surface.
  • FIVE-LAYER SUPPORT SYSTEM Designed as a premium mattress California king option, this 5-layer memory foam california king mattress construction combines a breathable knit cover, cooling gel memory foam, responsive transition foam, and high-density base layers to prevent sinking while maintaining stable support.
  • COOLING GEL MEMORY FOAM FOR TEMPERATURE CONTROL The 1.5 gel-infused comfort layer disperses heat and promotes airflow, making this California king memory foam mattress ideal for sleepers who want body-contouring comfort without overheating.
  • STABLE EDGES FOR FULL USE OF THE BED SURFACE High-density foam improves edge stability and maximizes usable space, allowing couples to enjoy the full width of this California king size mattress without roll-off or edge collapse.
  • EASY DELIVERY WITH 365-NIGHT TRIAL: The Lull mattresses are conveniently delivered in a box for easy setup in your home. With a 365-night trial, you have the opportunity to assess the mattress over the course of a year to determine if it suits your needs.

Brand: Lull


Size: California King


Product Dimensions: 84"L x 72"W x 10"Th


Item Weight: 24948 Grams


Item Firmness Description: Medium


Top Style: Gel Top


Cover Material: Polyester or Cotton


Number of Layers: 3


Fill Material: Memory Foam


Special Feature: Bagged


Item Firmness Description: Medium


Number of Layers: 3


Additional Features: Bagged


Construction Type: Memory Foam


Is Customizable?: No


Portable: No


Is Foldable: No


Size: California King


Item Dimensions L x W x Thickness: 84"L x 72"W x 10"Th


Item Weight: 24948 Grams


Item Dimensions: 84 x 72 x 10 inches


Item Depth: 10 inches


Cover Material: Polyester or Cotton


Fill Material: Memory Foam


Product Care Instructions: Hand Wash Only


Mattress Comfort Layer Material: Memory foam


Material Type: Memory Foam


Brand Name: Lull


Model Name: Original


Product Benefits: Provides comfort, support, and spinal alignment


Model Number: California King


UPC: 860075000318


Global Trade Identification Number: 18


Manufacturer: Lull


Set Name: 10'' Original Lull


Manufacturer Part Number: 9


Unit Count: 1.0 Count


Included Components: Mattress


Age Range Description: Adult


top-style: Gel Top


Color: White-grey


Style Name: 10'' Original Lull


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 8

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Extremely Happy.
Size: Queen Set name: 10'' Original Lull
We had our last mattress about 11 years and I did a lot of research when it came time to replace it. I am used to a very hard mattress but my wife likes one somewhat softer. We considered the sleep number but found that the divider in the middle was just not something we wanted to deal with for several years to come. We looked at other traditional foam mattresses but could not justify paying the outrageous prices attached to some of them. Then we came across the Lull mattress and started to look into it. All of the reviews seemed to indicate that it was definitely on the firm side and people really seemed to love it. When you factor in the 100 night trial, free financing and quick low cost delivery (unless you buy through Amazon.... but that is another review) free return and 10 year warranty it is absolutely a 0 risk trial. We got it, set it up about 6 pm in the evening and slept on it that night. It definitely took 3 to 5 nights to get used to it but we both love this mattress. For the first time in years we can sleep on our backs as well as our sides and definitely sleep much better through the night. As someone who likes and is used to a hard mattress this is amazingly comfortable. ... show more
Reviewed in the United States on September 29, 2016 by Amazon Customer
    • Best mattress ever!
Size: King Set name: 13'' Luxe Hybrid
This is my 2nd Lull mattress, I had to pass my first one on to my son because he loved it so much! I’m forever a lull mattress fan! I sleep like a baby on this and it seems to help with my back pain. It’s not too soft and not too firm. Best mattress I’ve ever owned. I will never buy any other brand.
Reviewed in the United States on January 31, 2026 by Tearbear
    • GREAT quality mattress!
Size: Queen Set name: 10'' Original Lull
My second Lull mattress. My first one was 10 years old. It still was not in to bad of a shape. (It is being used as a cushion on a homemade bench!) I bought the same Lull again. The 10 inch. Love it! It is as perfect as the first one. No smell at all. Not to soft and not to hard. Just right!
Reviewed in the United States on February 6, 2026 by Amazon Customer
    • Didn’t work for us but Lull Stood behind their 100 Night Trial
Size: Queen Set name: 10'' Original Lull
Well I am going to start off by saying this mattress just wasn’t for us. I was able to sleep on it but woke up with neck pain. My significant other though was not able to sleep at all on it. She complained of it being too hot. So we sent it back after 4-5 weeks of receiving it. We tried to make it work for us but we just couldn’t. I still give this a 4 star review; why? Because overall the experience was good and I don’t think it’s fair to blame the company for US not finding it comfortable. After all mattresses are not a one size fits all type of thing! We ordered the matress through amazon, it came, we unboxed it, allowed it a few hours to decompress. It fully decompressed all the way, was clean, no odor and really felt comfortable to initially lay on. Once we had made the decision to return it, we contacted Lull and they scheduled the pick up. Once the mattress was picked up and Lull verified it was picked up, we had our full refund within a day or two. Overall as easy as the process was of getting and even returning it with a full refund; I would recommend it to someone who might think it would work for them. ... show more
Reviewed in the United States on March 20, 2019 by A. Miller
    • Great mattress
Size: Queen Set name: 10'' Original Lull
Absolute hands down best mattress. You don’t need anything latest and greatest this is the best.
Reviewed in the United States on February 9, 2026 by Tina
    • Fall asleep faster, more comfortably, and drier.
Size: California King Set name: 10'' Original Lull
I started with a 4 star but changed my review to 5. I have only ever owned spring mattresses and had my last one too long. My back issues disappeared. I stopped sleeping hot. Is it weird to like the perfectly square corners? It just looks nice even with sheets and covers on it. Negatives are it’s heavy but it’s a California king so whatever. The airing out / up was a little funny but no issues and it filled out quickly. We slept on it on the floor but after some reading found it recommends it doesn’t dry very well unless you lift it off the floor on a platform/box or put it on its side when not using it. ... show more
Reviewed in the United States on July 14, 2021 by Customer
    • Medium plush is very firm
Size: Full Set name: 10'' Original Lull
This is firm - even for a medium plush. Thought it would be so much more soft than it is and it’s a lot of money, this brand, so If you’re not the type that likes or needs that, select the “plush” option or go with a different brand for your mattress. Packaging was great, arrive clean and packaged nicely. But, It’s almost worth it to spend an extra $150-$300 and get a purple, Casper, or tempurpedic that lasts and meets quality expectations. ... show more
Reviewed in the United States on October 24, 2025 by Sarah
    • Nice mattress
Size: Queen Set name: 10'' Original Lull
comfortable
Reviewed in the United States on November 20, 2025 by Jesse

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