Blinddarm California King Mattress, 12 inch Hybrid Memory Foam Mattress in a Box, Individual Pocket Spring, Medium Firm, CertiPUR-US
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Blinddarm California King Mattress, 12 inch Hybrid Memory Foam Mattress in a Box, Individual Pocket Spring, Medium Firm, CertiPUR-US

1,771 ratings
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Bed SizeCalifornia King
MaterialUpgrade Memory Foam
Mattress Thickness12 in

Key item features

  • Targeted Support: Individually wrapped pocket springs provide targeted support and motion isolation for undisturbed sleep.
  • Certified Safe: CertiPUR-US and OEKO-TEX certified, ensuring the mattress is free from harmful chemicals and safe for kids and allergy-sensitive users.
  • Cooling Layers: Breathable, moisture-wicking foam and airflow-enhanced coils prevent overheating for a comfortable sleep.
  • Edge Support: Reinforced edge support with durable perimeter coils eliminates sagging and maximizes the usable sleep surface.
  • Easy Setup: Compressed and vacuum-sealed for shipping, the mattress expands to full size within 72 hours on any bed frame.
  • Pressure Relief: Carefully layered foams conform to your body shape, distributing weight evenly and alleviating pressure points.
  • Versatile Fit: Engineered to fit most common bed frames, including modern platforms, box springs, flat frames, slat bases, bunk beds, and floors.
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Specs

Bed size, California KingMattress comfort level, MediumMattress type, Hybrid MattressesMattress thickness, 12 inBrand, BlinddarmMaterial, Upgrade Memory Foam

About this item

Product details

You deserve to get a supremely comfortable sleeping experience, and this Blinddarm 12" hybrid memory foam California king mattress is just what you need. The carefully layered foams conform perfectly to your body shape, distributing your weight evenly, effectively alleviating pressure points and facilitating deep relaxation. Hudreds of pocket springs are wrapped individually to prevent motion transfer and noise, ensuring uninterrupted sleep even if you or your partner toss and turn. Made with CertiPUR-US® certified foams and wrapped in an OEKO-TEX® certified mattress cover, designed with durability and maximum comfort as priorities, this California king mattress in a box provides unrivaled value at a reasonable price. Engineered to be a perfect fit for most common bed frames, including modern platforms, box springs, flat frames, slat bases, bunk beds, and even floors. Our California king size mattresses arrive vacuum-sealed and conveniently boxed. Simply unbox, unwrap, and allow up to 48 hours to expand. Meanwhile, the Blinddarm California king mattress comes 10-year warranty. If you have any unsatisfactory issues, please feel free to contact us.
  • Individually Wrapped Pocket Springs Mattress: Targeted support with motion isolation for undisturbed sleep.
  • CertiPUR-US® & OEKO-TEX® Certified: Free from harmful chemicals, safe for kids and allergy-sensitive users.
  • Breathable Cooling Layers: Moisture-wicking foam and airflow-enhanced coils prevent overheating.
  • Reinforced Edge Support: Durable perimeter coils eliminate sagging, maximizing usable sleep surface.
  • Easy Setup in a Box: Compressed for shipping, expands to full size within 72 hours on any bed frame.
info:
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Specifications

Bed size

California King

Mattress comfort level

Medium

Mattress type

Hybrid Mattresses

Mattress thickness

12 in

Warranty

Warranty information

10 Year Limited Warranty

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Customer ratings & reviews

4.3 out of 5 stars
stars
1,771 ratings304 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars73% (1,295)
  2. 4 stars9% (164)
  3. 3 stars5% (88)
  4. 2 stars3% (52)
  5. 1 star10% (172)

Reviews summary

Pros

  • : The mattress provides solid comfort at a modest price.
  • : Mattress provides firmness options, cooling surface, back support.
  • : The mattress allows longer, undisturbed nights.
  • : The topper fully expands to loft within about two days.
  • : The finish and design appear refined and smooth.

Neutral

  • : Can be extra firm, but also lacks edge support in some cases.
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Showing 1-3 of 304 reviews

Oct 6, 2026
Reviewer name: Vielee
Item details
Bed size: Full
Material: Upgrade Memory Foam
Mattress thickness: 12 in
Sold and shipped byBlinddarm US
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Helps With Back Pain

Love this mattress! It's not firm like most memory foam mattresses. Yet, it's not super soft. Helps with my back pain. Noticed a difference the first night of use! Easy to unwrap and set up. It is heavy in the box (about 58lbs) so some may need help with getting it to the room. Does have a faint smell but that was gone within 24 hours. Definitely recommend if you're looking for a good quality mattress to help with back pain relief.

Helpful?12BVEY38Q1S516458952407
Oct 13, 2026
Reviewer name: Gayelynn
Top Reviewer
Item details
Bed size: Twin
Material: Upgrade Memory Foam
Mattress thickness: 10 in
Sold and shipped byBlinddarm US
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Comfortable

Helpful?12BVEY38Q1S516458952407
Nov 11, 2026
Reviewer name: Kimberly
Item details
Bed size: Twin-XL
Material: Upgrade Memory Foam
Mattress thickness: 12 in
Sold and shipped byBlinddarm US
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Very comfortable and easy to open up and move around.

Helpful?12BVEY38Q1S516458952407
Current price is Now $249.99
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was $459.99
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4.5 stars out of 5, based on 549 seller reviews(4.5)
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