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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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Description
8 Inch California King Memory Foam MattressWhen it comes to your comfort, discover this 8 inch mattress. Its thick layer of memory foam conforms to your body, delivering amazing support, pressure relief and comfort. The memory foam layer is paired with a super thick layer of firm support foam, which helps reduce motion transfer so you and your partner can enjoy an undisturbed sleep. This mattress arrives in a box for easy setup. Foundation box spring available, sold separately. Specifications
When it comes to your comfort, discover this 8-inch mattress. Its thick layer of memory foam conforms to your body, delivering amazing support, pressure relief and comfort. The memory foam layer is paired with a super-thick layer of firm support foam, which helps reduce motion transfer so you and your partner can enjoy an undisturbed sleep. This mattress arrives in a box for easy setup. Foundation/box spring available, sold separately.
Specifications
Specifications Details
Brand Name
Sierra Sleep® by Ashley
Material
Fabric
Lifestyle
Traditional
Bed Size
California King
Assembly
Assembly Not Required
Product Details
- Comfort level: firm
- 8" profile height
- 1" memory foam
- 7" firm support foam
- Stretch knit cover
- Adjustable base compatible
- 10-year non-prorated warranty
- Note: Purchasing mattress and foundation from two different brands may void warranty; see warranty for details
- Foundation/box spring sold separately
- State recycling fee may apply
- Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening
Available Options
Specifications Details
Available Bed Sizes
Twin | Full | California King
Available Colors
Color Options
White
Available Configurations
Bed Size
SKU #
Dimensions
Weight
Twin
M59111
38''W x 74''D x 8''H
28 lbs.
Full
M59121
53''W x 74''D x 8''H
36.56 lbs.
California King
M59151
72''W x 84''D x 8''H
57 lbs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
The best guarana I've used - helped me kick energy drinks!
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
I suppose I ought to stand in front of a group of people, and admit to being a caffeine addict. However, I rather like caffeine. I started in on caffeine at an early age- first by drinking soda- mostly cola- as often as my parents would allow. As a teenager, I discovered coffee. Later, it was espresso drinks- I loved a good quad-shot latte, and eventually was getting several a day. A few years ago, my stomach stopped agreeing with coffee as much, so I switched to energy drinks. I was drinking about 4 Rockstars a day.
After doing the math, I realized that I was spending around $300 a month on these silly beverages. To economize, I switched to No-Doz. However, it wasn't the same, and it honestly felt... unnatural. The No-Doz sometimes aggravated my stomach, and I just didn't feel as well. Then I tried Guarana, as it is one of the main functional ingredients in many energy drinks. Love it. It seems to last a bit longer (it could be my imagination there, I am unsure), and it definitely feels more natural. I take a few of these per day- and I seem to have less of a "caffeine crash" after 4 hours or so than I once did. It still happens, but it's more gentle.
My only complaint is that the pills are rather large- definitely a chore to swallow!
Bottom line- this stuff costs just a bit more than a bottle of No-Doz, and is made from natural stuff. It feels healthier, and probably is. I now spend in a month wha I spent in a day on energy drinks. Also- for what it's worth- I've tried other brands of guarana, and this one "feels" best.
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Reviewed in the United States on March 8, 2012
★★★★★ 5
Great
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
Great for those days when your feeling a little tired not super hyping just pleasant energy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
★★★★★ 3
Worked well for a few days, then built up a tolerance
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
Guarana for me is one of those things that you should only take every once and a while. It gave me a nice surge of energy for about an hour or so after taking one, then after only a few mornings of taking one I noticed the effect completely wore off. So I stopped taking it for about a week. Then tried taking it again and it still did nothing. Maybe it's just my body, but now I need at least two to notice any effect. It's not that I even feel more alert now, it just makes me feel like I drank to much coffee. I will finish the bottle and then will not buy it again. Different supplements work differently for everyone though! Just because this didn't work for me longterm, that's not to say it won't work wonderfully for you. Trial and error is key with anything like this.
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Reviewed in the United States on October 29, 2013
★★★★★ 4
Great substitute for Adderall.
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
This is a great supplement to have around, especially because it's SO easy and economical compared to coffee. I would happily rate it 5 stars BUT I have to admit that the first few times I took it, the jitters it gave me were pretty extreme. It didn't bother me AT ALL, but I know that it would be WAY too strong for a lot of people.
However, if you're not a stranger to over-loading yourself on caffeine (or other stimulants) and you generally like its effects, this should be a great supplement for you. Very importantly, the jitters went away by the 4th day I took it and now it's hardly noticeable.
I started using it so I could easily lower my daily dose of Adderall (prescribed for ADD) and it did the job well.
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Reviewed in the United States on September 6, 2018
★★★★★ 5
works
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
I work night shift and these keep me energize without jitters. Also, I do not crash. They last a good 6 hours and I'm able to sleep when I get home.
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Reviewed in the United States on December 1, 2025
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